Leakdown test
Clean carbs and jets
Lube cables
New plugs
Change tranny fluid
Brakes like you mentioned
New gas and oil premix
Hope you plugged up the exhaust and no little guys are making a nest in there . That should get you started
Do it right. Send to a good builder . I recommend Redline. He could sell your old cylinders to fund the new build and have him do the engine. You'll love a 10cub
Simple carbs like fruits juices Ect and protein. You must wait at least 30 min after eating. I usually wait a hr. Simple carbs produce a energy spike. I usually have 7oz meat 3 cups apple juice and a banana.