First do something about your AC! 14 is not front line-capable. Sure, you lose 1 point of AC by putting a suit of armor on, but then you get the AC bonus of the armor which is likely to be much higher. I don't think there's anything else you lose for this character so far. A masterwork (or even mithral) chain shirt is cheap and has few downsides.
Then you can worry about your bluff skill. There are consumables which can help like draconic perfume or permanent items like a badge of veiled authority or a circlet of persuasion. You could spend your L5 feat on it if you're really having trouble.
I assume that L6+ is likely to be in the devoted muse prestige class. That gives you a single level to work with which needs to be full BAB. Besides adding one to the level of one of your current classes, urban bloodrager/barbarian gives you +2 AC/attack/damage for a few rounds a day, or scaled fist unmonk would let you add your full Cha to AC if you really don't want to wear armour and could give you combat reflexes as a bonus feat.
Counting the differences:
L3 VB paladin: +1 AC, +1 damage with smite.
L2 Spear fighter: bonus combat feat, +1 to acrobatics to avoid AoOs.
L2 WP samurai w/songbird: +1 damage with challenge, one versatile training w/perform (dance) - about the equivalent of the cunning feat.
- all of those could wear a chain shirt for +3 AC over the current pretty easily.
L1 scaled fist unmonk: better saves, +2 AC when unarmored, one bonus combat feat, assorted bonuses fighting unarmed (including when something's too close to swing a polearm).
A 24 on bluff to feint should beat humanoid enemies with a +14 or less in sense motive, or many others with a +10 sense motive or (BAB+Wis) 10 or less. Either you're way outclassed or there's something odd happening.
Combat reflexes for sure. A reach weapon and high dex? It's a crime not to have it.
If you go with monk then you have another feat. Skill focus (bluff) is obviously the biggest bonus you can get. Deceitful might lead to the incite paranoia feat further down the track; it's obviously a point less good for feinting. Dunno what race your character is but against the remote chance you're a half-orc, the additional traits feat might get you dirty fighter and born under the stranger; this would be the biggest single benefit with feinting which a feat could give you. The betrayal of trust trait might replace dirty fighter for non-half orcs, though it might not fit you.
Just put 1 level in wizard foresight specialist and every time you need to roll a dice of d20 you automatically get a 20 since you have a bizarre pc why not do it more bizarre ;-)