Are you gonna do springs too? If not I think they recommend keeping shifts under 6200 or youll start to have valve float.
Parts:
Rockers (Obviously)
OR Pushrods arent necesary but can't hurt.
New lifters can't hurt either.
Rockerbolts Why aren't rocker bolts re-usable? arent they just like any other bolt?
Valvecover gaskets and the little bushing thing for the bolts if you mess em up.
Springs if you want....If you do springs you need a springs compressor and one of the things that you hook up to an air compressor and it pressurizes the cylinder that way the valves cant fall out.
I'm sure im missing some stuff, this is just what I know from reading since i wanna do rockers instead of a cam too.