Driving distance will be fine with your srixon. The Nike balls will help you stick 3i approaches into legend greens where as with your srixon you will need to factor in a bit of roll out from long approaches.
Since you are a srixon fan, when you switch to legend tees, keep using what you are comfortable with. If they are rolling out more than you like, then move to a stickier ball. I like the lvl 35 z calloway and lvl 71 nike balls.