In my extended experience building bikes on paper via Excel...(geek)...the best place to save weight will be the fork. IMO...it's a wrong move. It's a great fork. I'd rather see OP send the fork to PUSH Industries for a rebuild and tune, and ride the crap outta the bike the way it is. It's really a killer trail bike the way it sets. You wanna get faster...experiment with turning it into a single speed. That will make the bike a couple lbs lighter and probably the rider several lbs lighter. If you go SS, you will want to have PUSH change the fork to an RLC so you can lock it out b/c SS bikes are made to be ridden "stand and honk" style when it comes to climbing. It's truly amazing what you can climb running 2:1 ratio with a rigid fork. Lock it out, stand and honk, unlock for the descent.

Other than that...keep it the way it is. The lost pound moving from the Vanilla will be overshadowed by the sub par performance of a noodley little SID. The money difference from a Vanilla to a Float will be over the top for the weight savings.

My 0.02.