Agreed. If the bike isn't currently on the road, go ahead and start doing some preliminary disassembly and exploration. You will likely find issues that need to be addressed, better to know about them now than to have them surprise you later.
Get it up on a stand, blocks, or whatever, and pull the seat, tank, wheels, pipes, etc. Degrease everything and start inspecting. Pay particular attention to moving or rotating parts, check for bad bearings, bushings, etc.
Carb cleaning is a good indoor project, pull them off, drain the gas, hose off the worst of the muck, and bring them inside.
Just make sure to protect things from condensation, like if you pull the carbs then stuff rags into the intakes.
Best of luck on your project.
mystic_1