highschool guys, yea, my friend hangs out with this girl whose damn fine, and told him i saw him with her and i think shes a cutie, he said"oh i kinda want to hook u up with her", is this a recipe for disaster or is it okay and i could use this and how would i do that?

I wish I had friends like that!
Potentially this could work really well, he could DHV on your behalf whilst automatically you'd have social proof... go for it I'd say.

to be honest, hes an ass and would probably be like "hey that guy thinks ur hot"

It sucks that you friend is a jerk. I would definitely go for it though. Unless it could affect your friendship with your jerk friend, you have nothing to lose by sarging her. And anyway can you really resist sarging a Hot Babe when she's right in front of you? If you can, then you’re wasting the best times of your life. I would kill to be back in high school, now knowing what I know.
Anyway, I would go for it but I wouldn't rely on him "hooking you up”. You trying to be a PUA, you don’t need him to “hook you up”. It will seem very Afc because you didn’t have the confidence to talk to her yourself. Just meet up with him when he’s hanging out with her and treat it like working a two set. Use him as social proof, but don’t treat him like a wingman, treat him more like an obstacle. Don’t rely on him to make it easy for you, rather anticipate his wild antics and figure out a way to disarm him and distract him. Perhaps you should bring a mutual friend with you, and use him as a wingman to distract your jerk friend and keep him occupied while you work on the target. If your game is solid you should be fine after that.