I was in the same boat, I have a 60gal long. I "tried pulling this off w/2 canister filters" before I bought a sump. The canisters were a PITA and anytime I did maintenance the parameters spiked. I bought a CPR sump off Amazon and a return pump from BRS and a HOB overflow from LifeReef and never looked back. My advice: get the biggest sump that will fit in your cab, buy the biggest pump you can afford, and buy an overflow matched to your pump. Don't be afraid of HOB overflows. I heard many horror stories about HOB overflows, but if you plan right = no issues. Once you make the move you won't regret it.