What function do you want back/improve the most?

delboy...i think your order is pretty spot on for most to be honest. That would be my order but i chose sexual function based on the fact that I do have some upright mobility..although its assisted and my bladder is managed now and my bowels although ongoing with some problems I do manage. 
So I chose your third as my first...its very important to me and became my main focus to improve on as its a part of my life that I was keen to continue to enjoy to the max!...and its the one are of function that we are not helped much with at all where the other functions have clearer rehab for.