Well I didn't do any precautions with my truck when I didn't touch it for 4 years
Granted I don't know what tolls that did to it but....
Mine didn't rust so I'm going to guess that's not a problem unless you live close to the ocean, especially on the east coast where rust is a big problem
I know people tend to use the after-run oil before they put the car away and just from experience with real sized cars most people try to seal up the things that shouldn't have moisture in them so it sounds like you're on the right track, maybe even plug the carb?

That's about all I know, hopefully someone with some better experience than just throwing their car in the closet will have some good answers.