Both wheels off made easy:
1) Remove rear wheel. Bike will rest on front wheel naturally.
2) Put BIG chunk of wood or something else solid enough under final drive.
3) Put weight (20 kg) on the rear luggage rack until front wheel comes off the ground. Secure whatever you put on it so it can't fall off!
4) Remove front wheel.
5) Put another chunk of wood under front forks to make sure nothing happens while you're off with the wheels. Tie center stand to front fork to be even more sure.
6) Assemble in reverse order.
Done it like this before, but now I just take a few tools and ride to the tyre fitters. Take one wheel out there, refit it with new tyre, then do the next. Easy and I don't have to drive the cage to get there, no hassle.
Cheers,
Michel