Another Wheel Spacer/Drop Question

370z owner

Ok guys im finally planning on giving my Z an aggressive stance.

Since i don't have the money for brand new wheels i will be keeping my stock rays.

So i just wanna know whats the best spec for my car. i was planning on doing the following:

255/35/19 front~20mm spacers+H&R Springs.
285/35/19 rears~20mm spacers+H&R Springs.

will this set up work on the stock rays? also since im getting my wheels powder coated black i don't want to keep the stock lug nuts. so if any one can recommend me lugs that will fit the stock rays i will appreciate it.

also which spacers should i go with and do i need extended studs?

Thank you

Dammit didn't realize i posted this in brakes/suspension can someone move this to the wheels/tires thank you!