Rockers for a L36 be put into a SuperCharged L36 (ZZP SC), can that work? Like if I were to get the rockers now, then the SC in several months...? Im just worried about if engine components need to be replaced, and the rockers are part of it as well, so I would spend the money on the rockers for nothing really

I think they would go together with no problem. Since you are keeping the stock cam, getting the 1.9'* will go well with the */C. Just open up the exhaust too if you are gonna get rockers.

Like headers and cat back or something for the exhaust? Hi flow wont cut it?

A set of headers or PEM'* would really help, but even a high flow cat and muffler will still help, almost as much as headers with a stock exhaust system, but not quite.
For instance, on an L36 engine with a CAI and rockers, Ported exhaust mani'* are gonna net you around 10-12 hp, and headers 4-6 more than PEM'* -both setups with original cat, resonator and muffler.
Engine with CAI and rockers, but stock unported manifolds, but with a high flow cat, resonator, and muffler will get you around 8-12 hp, maybe a couple more or less depending on exhaust manufacturer and size of piping.

They're the same rockers as the L67. Get some nice LS6 springs, new lighter pushrods if you can... Then wait for the PCM for the kit, and get a higher redline...

Have you put the rockers with the Supercharger?