I wouldn't do much moving of your overlander until you replace your axles, and when you do I'd do all new drums/brakes so you know you have reliable gear under there and dont have happen what stopped us cold getting our 66OL home (locked up wheel due to a broken brake spring. Not to mention not having suspension is really hard on everything to do with the trailer, especially interior cabinets, appliances, electronics etc. We replaced the ones on our 69, and when we picked up the 66 we were shocked how bad the trailer bounced (we'd) forgotten how much better the new axles were.
If you can swing it, Id replace them while they are out, if you can't I wouldn't let it do much travel till you do. Not sure shocks bottomed out on ours, and it was all the way down, but either way with the rubber all dead in there the shocks really dont do anything, since the axle isnt moving like it should anyway. If you're going to leave it in the driveway till you replace axles, then why not just leave the shocks off, and replace those at the same time anyway.
I too totally understand your "on the cheap" since I've been idle on our 66 for a month now waiting for the bank account to recharge so I can take care title work, get the rest of the wire in, and insulate/reinstall interior skins before it gets too nasty outside.