Stats seem to be okay. Although you get good Will Saves, unless you plan to dip 2 levels into Paladin for Divine Grace (which is a great investment IMO), I wouldn't be dumping Wisdom. You do get a lot of skills as a Bard (6 + mod), unless you want to be an all-encompassing Skill Monkey, dumping Intelligence would be better, and you don't technically lose any skill points if you use your Favored Class Bonus for it. Although you lose Bardic Knowledge (meaning you have to manually invest in more Knowledge ranks if you want that to be your forte), you still have Versatile Performance, and this is something both you and your Familiar get (though to be quite honest, all it will give you, at-best, is an Aid Another bonus from your familiar) that you can sub out for your other day-to-day skills.
Your basic character outline is that you want a fairly self-reliant Bard that can also provide buffs. Being 3/4 BAB and only D8 Hit-Dice (without any really cool powers), combined with your buffs (both spells AND performance), will make you only as effective as an unbuffed Flurry of Blows Monk on the front lines, and that's being generous. Although you might be able to hold your own melee-wise in the lower levels, I would personally consider trying to consolidate your stats to be less MAD to provide more for your party in the later levels; finding a way to go a pure Dexterity to hit and damage would go a long ways, since you can dump Strength to 16 (sparing you 10 point buy), giving you more skills, more Will Saves, more Dexterity, or more Charisma. Hell, you don't even need to find a way to get Dexterity to damage, since you can specialize in Aid Another (via Weapon Finnesse), and pump those bonuses through the roof, and you can invest in Crowd Control spells so your other more squishy party members don't get overrun from mooks that come later in the fight.
So to sum up:
I'd change the traits to Reactionary and Indomitable Faith (cookie cutter, I know, but it's the best set-up for basically everyone). +2 to Trip Attempts will become obsolete later in levels (because your BAB and buff scale won't compare to enemies who have higher BAB and similar or better buffs), and the +3 rounds becomes invalidated with Lingering Performance feat (which basically every bard should have, and is doubly true with effects that cost multiple Performance rounds, which a Duettist has).
Duettist is great because it provides you with a familiar that, if chosen right, can be resourceful, such as dropping Acid Flasks and such onto enemies (though this too becomes obsolete in the later levels), and providing Bardic Performance benefits from two different locations (this puts your familiar at risk, and becomes invalidated with the Shadowbard spell).
Combat Reflexes and Bodyguard are great investments, but I would shore up your defenses greatly if you were to go this route, as this requires you to be next to allies (usually your melee friends) to be useful. In other words, you better be planned to get attacked if you use such a tactic. Methods to increase your defenses would include maximizing your Dexterity, increasing your AC through other means (buffs, items, etc.), as well as your Saves (2 levels Paladin is an awesome investment for this, in my honest opinion). Other effects such as Blur/Displacement, Mirror Images, are great ways to make yourself an invincible target.
If you are going to be using Versatile Performance, using a feat like Thrush (or whatever) for an enhanced Diplomacy won't apply if you're using Performance to mimic a Diplomacy skill check. I would instead choose the Prodigy feat, since this applies to 2 separate performance skills, this means up to 4 skill checks that you mimic with a Performance get a +2, increasing to +4 by 10th level, an overall net gain in comparison, since you're basically getting a +8 skill increase (going to +16 by 10th level) at the cost of a +3 skill increase feat slot (going to +6 by 10th level).