Hello,
I would say there is no set media. Your tank will sort of tell you which media you will need. Since it is new the floss for mechanical and bio to help establish a bed should be good. Once it gets going carbon can be added to help keep water clean and clear, gfo for phosphate and all sorts of other things.
there are some that run carbon all the time, others a few days and then pull it. I think it is a personal choice on that one
saw you other threads, did you want to start a build thread on your new tanks? Just wondering