Man, I don’t know your specific situation, but before I bought a climber I would try the specific one you’re looking into. I had one of the original lone wolf hand climbers which are basically the same as the lwcg one and no chance would I recommend it to someone with anything close to your situation. They are a serious work out.
I think you could possibly make do with a summit type climber that allows you to sit to raise the bottom platform. They are more bulky and not preferred, but incredibly easier to use. Have you looked into those?
Have you tried using a light weight lock on and sticks? If you can manage a hand climber, I feel like setting up a stand and sticks to me would be doable?
I would lean towards novix over xop personally. They have gotten better, but I’ve seen enough broken xop’s over the years not a chance you would catch me in one.
Have you considered a few ladder stands around your property? Or really even setting up some natural ground blinds you can slip in and out of? What weapon are you planning to hunt with? With a rifle I wouldn’t even stress about getting in a tree.