Hello All

I'm currently a lvl 7 in a campaign and was looking for tips on optimizing my character. Just hit 7 last week but the character is an int based monk2/rogue3/swordsage (1) for the maneuvers and some tinkering with shadow hand shenanigans. Here's what I have so far:

Strongheart Halfling (2 flaws)
Feats:

Carmendine Monk
Ascetic Rogue
Weapon Finesse
Superior Unarmed Strike (ToB)
Keen Intellect
Shadow Blade (ToB)

Variants:
Hand & Foot variant from UA
Invisible Fist sub
Halfling Monk (Skirmish 1D6 and progression over FoB)
Thief's Luck

Skill tricks:
Twisted Charge
Agile Climber
Extreme Leap

What I'm trying to do is to see what direction I can take this character moving forward. Given that most of damage is D6s from skirmish/sneak-attack or maneuvers should I focus on being able to trigger that more often or on trying to do more damage? At 7 I was hoping to go into Shadow-Sun Ninja but it seems that it requires a higher wis score than I have (wis, str, cha were dump stats at -1 mod apiece). Are there any Monk or Rogue PrC's I should be looking at here and is SSN worth it if my wis is a dump stat?