Congrats on the new Bota! I think the tall ROPs is designed to protect a rider of a certain height during a rollover. It seems some tractor need a higher ROPs to meet the safety spec. I have the same problem on my JD2320. It's something like 87"tall so it won't fit under a standard 7ft door. Mine stays folded most of the time too. I did raise it lately when I was moving snow. You never know what you have under the wheels, could be a big hole. I always back into my garage. That way you are turned to see the ROPs, so it should be harder to bump it into the garage. I was also thinking of putting a warning system up over the door. A bracket sticking out a couple of feet with a piece or 2 of aluminium pipe, like a wind chime pipe, hanging down to intercept the ROPs and make enough noise to make you stop and fold it. If you get some low mounted weight, like wheel weights and maybe loading the tires that will help your stability a lot.
You are gonna love the loader. It's like having a big strong buddy around to help you lift heavy stuff. You'll get used to the diesel fumes and wonder how you ever made do with a gas engine!