Hi TnFishwater98,
The idea of curing live rock is to allow the dead material to break down and not pollute your main tank with high ammonia and nitrate levels. You brush off any of the dead material, remove anything that looks or smell bad and then let the rock cycle away. This saves your main tank from any mess. All the good hitchhikers that survive the curing get moved over as well.
I have a bunch of base rock, as well as live rock that has been dry for many years curing in a big rubber made trough. It is set at about 82 with a pump and little light, with SG of 1.028. The neat thing about this setup, is that the rock is cleaned of any rotting material, and also gets to cycle, so when I pull that rock out it is all ready full of bacteria ready to quickly cycle a new tank.
Now you can do all this in your main tank, but you need to watch your ammonia and nitrates and do more water changes if needed. Also by placing everything in you new main tank, you might find some bad hitchhikers that you did not want. Quarantining rock like fish and corals become more important, especially once you have a main tank setup.
Hope some of this help, I'm new myself, if the truth be known, we are all new,just some have more knowledge/experience than others.
Oh and while I'm thinking about it, if you do setup a rock curing tank, still use RODI water, not straight tap water with a product to remove chlorine from your tap water, sometimes the nitrate as well as phosphate in that water can get trapped in your curing rock, only to leach latter in your main tank.