A one level dip in swashbuckler mouser will do wonders for your combat ability.
I would go 3 levels unchained rogue for dex to damage and one level of swashbuckler mouser so you can flank from inside the opponents square. If they move out of your square, even if it is a 5 ft step, it provokes. The opponent takes a -4 on all attacks unless targeting you.
You get a lot from a 1 level dip in swashbuckler.