You might examine a pre-'70 (/2) mudguard to see how it was done.
Myself, I tie the centerstand in place to the exhaust crossover,
then I remove the front wheel (easy - single brake)
then I tilt the bike forward (hope you didn't just fill your fuel tank...) till it rests on the fork legs,
and then I remove the rear tire.
Get a block on which to rest the final drive, and tilt the bike back.