As for the point you start adding to SAs . . . .
What UD said isn't a bad idea, as the long-run damage will be minimal. IMO, if you want a true slowbuild and you're absolutely not worried about short-term results (like my guy, pretty much), then you're going to to want 68/68/68 with jumping and catching where you want them before you touch SAs.
The real question is: How high should I take jumping/catching before touching SAs? Should I spend points in confidence or stamina?
My answers are 48/48 and not for awhile, but some would disagree (some will especially say you should take jumping to 60, which is fine--I would eventually take it to 60 anyway).