Return line plumbing/ tank flow question

[squibege]

Planning on keeping a mixed reef with mostly LPS, def want a nem at some point. Have a 90G DT and a 20G sump, Fluval SP2 950GPH sump pump with a 1in return line coming off of it….

Should I T it off at the top of the tank so I have water output from two areas? Or keep it as just one line entering the tank?

Worth it to get “Innovative Marine AUQA Gadget Spin Stream - Return Nozzle” / “SCWD Wavemaker - Switching Current Water Director”/ something to change up the flow patterns of the tank on the return?

I also have a Hydor powerhead (estimating it to be 850gph based on size, label is obscured since its second hand). Should I get an additional powerhead? Put the two powerheads on a wavemaker for alternating the flow patterns? Then I wouldn’t have to worry as much about the return and probably would just do a simple single line.

So many choices!