First quad build questions

Hi:

Building my first quad ( ZMR 250 )

Planning on flying it as basic platform: Motors , ESC's, as 3S with no plans for racing or FPV.



Here's what I have:
ZMR 250 frame
Dx6i tx
Spectrum rx.

What I have on order  :
Racerstar 2205  2600kv motors
Racerstar 20a ESC OPTO 
Simple PDB.

Curious about choices for FC. Looking for F3 or F4  with cleanflight.

Any thought about omnibus based FC?

Thanks 
Rick