Looking to make my dust collector mobile this time and since it is a bit Frankenstein's monster I have to build a cart to do so. My only requirements are that I have a homemade Thein collector now but want to upgrade to a super dust deputy at some point and I want it to be under 87" tall so it can roll under my garage door motor. My main concern is will it tip over, the design side of me says it won't but that nagging little voice in the back of my head says maybe. The back and base would be 3/4" plywood with 2x4 internal structure. I've attached a quick Autocad sketch of what i'm thinking. Thanks