This belongs in the C&S, BTW.
But in regards to your question - it's too late to become a 70:70 Bowman. It's an INT-heavy build, if I'm not mistaken, and if you're L44, you MIGHT be able to pull off making a 70:70 when we eventually reach the 110 Cap or such, but certainly, not the current cap.
If you want more information about it, check out this thread:
http://www.silkroadforums.com/viewtopic.php?t=24752
Or LS's.