Thoughts on a build? (Ratfolk Swashbuckler 8)

[cetra02]

I am wondering if I should dip 3 levels into Unchained Rogue, to get some Sneak attack and free up a couple feats from Weapon Focus and Fencing Grace?

Female ratfolk swashbuckler (mouser) 8 NG Small humanoid (ratfolk)
Hero Points 1
Init +6; Senses low-light vision; Perception +14
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Defense
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AC 23, touch 17, flat-footed 17 (+4 armor, +4 Dex, +2 dodge, +2 shield, +1 size)
hp 88 (8d10+8)
Fort +5, Ref +12, Will +5; +2 vs. disease
Defensive Abilities charmed life 4/day, nimble +2
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Offense
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Speed 30 ft.
Melee +2 rapier +17/+12 (1d4+7/15-20+8 Precision) or
tailblade +7/+2 (1d2-2)
Special Attacks deeds (derring-do, dodging panache, hamstring, kip-up, precise strike, quick steal, superior feint, swashbuckler initiative, swashbuckler's grace, underfoot assault), panache (3), swarming, swashbuckler weapon training +1
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Statistics
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Str 7, Dex 19, Con 13, Int 14, Wis 12, Cha 16
Feats Agile Maneuvers, Combat Reflexes, Fencing Grace[UI], Paired Opportunists[APG], Scurrying Swarmer, Weapon Focus (rapier)
Traits adopted, anatomist, efficient packer
Skills Acrobatics +15, Bluff +14, Climb +2, Diplomacy +14, Escape Artist +9, Perception +14, Sense Motive +12, Sleight of Hand +8, Stealth +15, Use Magic Device +10; Racial Modifiers +2 Perception, +2 Use Magic Device

[avr]

A 3 level dip into rogue will cost you 3 points of damage when using precise strike, a point of AC from nimble, one use of charmed life/day, one point of BAB, and the 7th level deeds (swift action dirty trick, full speed when tumbling). You gain a fair bit too but it's good to remember all the things you give up.

[Daw]

Reepacheep's daughter shouldn't be backstabbing anyway.

[nicholas storm]

I think if you make use of scurrying swarmer pretty often in your party I would do it.