Sump suggestions for limited space

Hi everyone! I just recently bought a 60g tall with wooden mission style stand. It's a nice display piece but has very limited space inside the cabinet for a sump. The length is about 43" but only 10" deep. There's also the center brace to contend with. I have considered 2 small tanks plumbed in line but I am not prepared financially to have two custom drilled tanks just for a sump. I also considered heavy duty plastic tubs that I can plumb myself, plumbed to act like baffling (if that makes sense?). I will be using a reef octopus 110int that has a10.4x7" footprint and of course a return pump. I don't need a large sump but one that is practical and has as many gallons as I can fit. I won't be adding any reactors or other in-sump equipment at this time but would like a bit of space available for later additions. Does anyone have any suggestions on how I could do this rather inexpensively? Thank you!!