Help with Angel fish mix!!

Hi guys im just about to set up a 7ft/2ft/30inch marine fish only tank! with large DSB sump and large skimz protien skimmer! also fx5!!

im looking at keeping angel fish together! Wich i no can be a tricky thing to do!

please can you tell me the amount and mix that will be posible!! Adults if posible!!

thanks guys!!