Shadower Skill Help *Stuck*

Okay im level 128 and i currently have lvl 3 assassinate, lvl 1 fake, lvl 1 venom, lvl 20 BS and lvl 1 smoke screen. now my delima is where to go from here i do a little bit of everything bossing and training so should i try and max bs, lvl up assassinate and venom doing 2ass 1 venom per lvl, or just pump all into ass or what idk where to go from here to many varieties. what do you guys think i should do

these previous threads have provided the exactly same dilemma.

http://www.southperry.net/forums/showthread.php?t=3381
http://www.southperry.net/forums/showthread.php?t=2706

it just means every shadowers face this problem and there isnt really one distinct build; the only answer you can probably draw is that your build is up to you. of course if you level up more, the problem just fixes itself doesnt it?