1. Do i put copper spray on the head gasket? i have the felpro gaskets.
Go for it. Some people swear by it. I always use it on a rebuild. Don't spray the deck or the heads, just both sids of the gasket then install.
2. How do i know which push rods go were i took them out to clean them and idk were to put each of them or if there even different in size?
Always put them back in the same holes they came out of. The wear pattern on the tips are particular to each rocker and lifter.
There is no way of telling what hole they came out of it you mixed them up.
3. What do i use to clean the surface of the heads and block? degreaser?
Razor blade and some MEK or acetone.
4. One of the heads has a small chip by the valves should i worry its a junk yard pulled motor from a 97 gtp.
Take a Dremel tool with a barrel sander and knock the edges down. If you don't do this it will create detonation in that cylinder.
5. I have the torque to yield bolts for it with a paste on them idk if those are ok for the heads, since i've heard debates about paste and teflon tape and i dont want my heads leaking coolant or anything at all.
Put the bolts in and TTY them. They already have a sealer on them. Make sure they are brand new OEM fasteners.
6. Any other info is appreciated and thanks in advance.
If the motor was running well when you disassembled then there should be no problem but to be safe take the block and rods to a machine shop and have them checked for OOR and mains alignment. If the block is out of spec it may run for about 5 minutes and FAIL.