I need help to improve my Paladin

[Entryhazard]

I'm playing as a PC in a new campaign starting at level 4. Me and a friend of mine managed to convince the DM to let us play as Aasimar and Tiefling respectively.

We rolled ability scores as 4d6 discarding lower

Our party is as of now:

[boring party introduction]
Tefling (demonspawn) Bloodrager (abyssal) 4 with the claws racial instead of the SLA. He manages to reach insane damage because he took the Improved Natural Attack (Claws) feat and during Rage considering the enlarge effect he deals 2d6 + 7 per claw without Power Attack. The Bloodrager is from the upcoming Advanced Clas Guide if someone's wondering.

Halfling Rogue 4, insane skill monkey with his 17 Int, he's a sniper (not the archetype, we need trapfinding) with incredible stealth.

Wood Elf (setting race, like standard Elves but with a bonus in Wis instead of Int) Ranger 2 / Druid 2. Decent at TWF with Rapier and SSword, moderate magical support, mainly Detect Magic. Bear animal companion.
[end]

Then there's me, Aasimar Paladin 4

Str 18
Dex 15
Con 12
Int 14
Wis 13
Cha 18

by WBL i took a +1 Full Plate, a +1 Longsword and a Quick Runner's Shirt.
As feats:
1 Improved initiative
3 Combat Reflexes

Considering that my DM allows retraining of fets between levels, which build do you suggest me? Given that the Bloodrager is our damage machine though he has really low AC during Rage, I was considering a defender type of build.

Sword & Board came to my mind, I even have the Dex to take some advanced feats, but I don't know if shields interfere with my ability to use Lay On Hands and other spells, and I need clarification on that.

Also I'm planning to take one point in Con at level 8 in order to get Angelic Blood at 9 and the wings at 11, and that's the reason i wanted to play Aasimar since the beginning.

So any advice to optimize this paladin?

[Twoswords]

Entryhazard wrote:

I'm playing as a PC in a new campaign starting at level 4. Me and a friend of mine managed to convince the DM to let us play as Aasimar and Tiefling respectively.

We rolled ability scores as 4d6 discarding lower

Our party is as of now:

[boring party introduction]
Tefling (demonspawn) Bloodrager (abyssal) 4 with the claws racial instead of the SLA. He manages to reach insane damage because he took the Improved Natural Attack (Claws) feat and during Rage considering the enlarge effect he deals 2d6 + 7 per claw without Power Attack. The Bloodrager is from the upcoming Advanced Clas Guide if someone's wondering.

Halfling Rogue 4, insane skill monkey with his 17 Int, he's a sniper (not the archetype, we need trapfinding) with incredible stealth.

Wood Elf (setting race, like standard Elves but with a bonus in Wis instead of Int) Ranger 2 / Druid 2. Decent at TWF with Rapier and SSword, moderate magical support, mainly Detect Magic. Bear animal companion.
[end]

Then there's me, Aasimar Paladin 4

Str 18
Dex 15
Con 12
Int 14
Wis 13
Cha 18

by WBL i took a +1 Full Plate, a +1 Longsword and a Quick Runner's Shirt.
As feats:
1 Improved initiative
3 Combat Reflexes

Considering that my DM allows retraining of fets between levels, which build do you suggest me? Given that the Bloodrager is our damage machine though he has really low AC during Rage, I was considering a defender type of build.

Sword & Board came to my mind, I even have the Dex to take some advanced feats, but I don't know if shields interfere with my ability to use Lay On Hands and other spells, and I need clarification on that.

Also I'm planning to take one point in Con at level 8 in order to get Angelic Blood at 9 and the wings at 11, and that's the reason i wanted to play Aasimar since the beginning.

So any advice to optimize this paladin?

Having sword and shield does hinder your ability to LoH. You do not need a huge AC since you will have the ability to heal yourself. I would suggest a twohanded weapon for some serious damage, since an enemy who dies fast wont challenge your AC anyway.

Feats:
1. Fey Foundling (+2 HP healed per die rolled)
2. Power attack.

For gear I would suggest

[Rerednaw]

If you're worried about damage, in addition to Twoswords' suggestions I'd consider the Oath of Vengeance archetype. You lose channeling in exchange for the ability to use LoH as extra smites. With an 18 cha you already have a few extra LoH you can burn this way.

Unless there is a story reason, 2H generally > 1H.

Have fun!

[Kryptik]

You can lay on hands with a light shield.