Help my spell sundering archer.

[Anger Nogar]

Hi there. I am playing an archer character in a low-magic steampunk setting dominated by powerful wizards.

At the moment I am urban barbarian 6/archer fighter 3/horizon walker 3.
My stats are Str 14 Dex 20 Con 14 Int 11 Wis 12 Cha 8

My feats are: Point Blank Shot, Precise Shot, Rapid Shot, Deadly Aim, Agile Maneuvers, Extra Rage Power, Weapon Focus (Bow), Snap Shot, Improved Snap Shot, Combat Reflexes, Manyshot, Endurance.
This includes the 3 bonus feat that we get to make up for the lack of too many magic items.

My skills are: Acrobatics, Stealth and Perception at maximum ranks as well as some leftover points in Climb, Diplomacy and Knowledge (Geography).

My rage powers are Superstition (with favored class bonuses), Witch Hunter, Spell Sunder, and Surprise Accuracy.

My favored terrains are urban and desert with terrain mastery and terrain dominance onto desert for the fatigue immunity.

My traits are Optimistic Gambler and Highlander.

My magical items are a +2 adaptable longbow, a wayfinder with dusty rose prism and a helm that gives me darkvision and waterbreathing.

Thanks to superstition my saves are somewhat ok despite having no protective items. My damage is somewhat decent, so no major problems here.

I need to find a way to increase my spell sunder check since strength surge is not helpful for me. My current CMB is +18 and considering that I am facing CMDs in the 25-30 range I find it close to impossible to actually end spell effects on enemies (I need a check of 40+ for that).

Improved and Greater Sunder don't seem to offer any help since even if I take the useless Power Attack prerequisite - they explicitly give bonuses only for sundering items. The only thing I can think of is getting into the Eldritch Archer Magus for ranged spell combat and adding a true strike to my spell sunder attempt. Is there some other option that I am missing.

Also, is the following action sequence rules legal:
Declare Spell combat. Cast True Strike, Enter Rage, Swift Action Surprise Accuracy, Use Many Shot and Rapid Shot.
Both the first and the second arrow benefit from True Strike (and Surprise Accuracy) since they share the attack roll.
Use the first to spell sunder and the second to score normal hit.

If I decide on the magus route I would probably have to take at least 4 levels for spell recall to ensure I have enough true strikes to take me through the day (since finding a dozen of pearls of power is quite unlikely and I don't have a free hand for the wand wielder arcana even if I have such wand eventually). I really don't like the magus route, since it comes awful on my superstitious barbarian, but it seems the only viable option.

On a side note - what is the interaction between the clustered shots feat and the lingering pain arcana?
Does Optimistic Gambler increase the duration of Surprise Accuracy for more than one attack?

[Just a Mort]

Spell combat is a full round action, manyshot and rapidshot are full attack actions. They cannot be combined. The same way flurry of blows and spellcombat cannot be combined.

I'd tell you to get dirty fighting, improved trip, greater trip, greater weapon focus.

[Gisher]

Just a Mort wrote:

Spell combat is a full round action, manyshot and rapidshot are full attack actions. They cannot be combined. The same way flurry of blows and spellcombat cannot be combined.

I'm not sure it's that simple.

Rapid Shot can only be used as part of a full-attack action, but it is not, itself, a full-attack action.

PRD wrote:

Rapid Shot (Combat)

Benefit: When making a full-attack action with a ranged weapon, you can fire one additional time this round at your highest bonus.

The same is true of Manyshot.

PRD wrote:

Manyshot (Combat)

Benefit: When making a full-attack action with a bow, your first attack fires two arrows.

So the question becomes whether Ranged Spell Combat counts as a full attack action. We know that Spell Combat does.

FAQ wrote:

Magus, Spell Combat: Does spell combat count as making a full attack action for the purpose of haste and other effects?

Yes.

Edit 9/9/13: This is a revised ruling about how haste interacts with effects that are essentially a full attack, even though the creature isn't specifically using the full attack action (as required by haste). The earlier ruling did not allow the extra attack from haste when using spell combat.

Since Ranged Spell Combat merely modifies Spell Combat rather than replacing it and none of those modifications change the ability to make a full attack, it seems that Ranged Spell Combat should count as a full attack action. And in that case, Rapid Shot and Manyshot would be usable.

[Anger Nogar]

Just a Mort wrote:

Spell combat is a full round action, manyshot and rapidshot are full attack actions. They cannot be combined. The same way flurry of blows and spellcombat cannot be combined.

I'd tell you to get dirty fighting, improved trip, greater trip, greater weapon focus.

Unfortunately I am 5 more levels of fighter from greater weapon focus and I don't see how the trip focus helps me for what I am trying to do. While indeed trying to trip someone in melee from flanking position is much possible without -4 penalty from trick shot, with flanking bonus and without needing to beat his CMD+5 by 10 difference... I am simply wasting 3 attacks for 2-3 opportunity attacks from me and my allies as well the inconvenience for the enemy from being prone.