180 gal tunze recommendations

[reefgirl189]

Looking for some recommendations please

I want to do LPS/some SPS long term

Looking for tunze recommendation (can't do ecotech vortech, don't have the clearance on the sides of the tank).

Have the apex controller, which is tunze friendly supposedly.

So is it smarter to go with 4X 6105's or 2X 6205's? What module for apex do you need to do variable speed control or is it cheaper to get the multicontroller 7195 from tunze?

note: I have approx 800-850 gph flow from my return pump.

Help make up my mind for me!