93 gallon cube return pump

So I just bought a 93 GALLON MARINE LAND cube with the corner overflow it's rated for 750 gph. I am going to be usingroup a 20 gallon baffled sump .I am guessing my magdrive 9.5 won't be enough because it's only pushing 740 when it's a 3 feetc pumping height and I will be going at least 4 .





So I am wondering if anyone else has a 93 gallon cube and what pump they are using ? Also a pic of their sump will help me with my plumbing plans





Thanks in advance!