Wow, that's steep. I'd make my calves pop like balloons, where I ride.I'm running 33-13 on mine. (~60") It feels pretty good once it's moving but doesn't accelerate that fast. At the track it's fine because I have a good roll in but when I ride park it tends to feel a little sluggish.
I just ordered some Eastern Dragon Bars (7.5" rise). They should be here in a couple of days. I think I'll be pretty happy with them. About all I have (or want) to upgrade is the stem and BB at this point.
You will like the taller/wider bars.