Classic Car Storage

[89MOPAR]

 If you can afford it buy a "car capsule".  Basically it's a big plastic bubble for your car. Drive on , cover it. zip it up. plug in the fan. It keeps air circulating over+ around the car continously. That way no condensation can form.  They run about $400 though. I've had one for 3-4 years, still works great. Peace of mind that it keeps Rust Away !
  This will preserve your exterior + interior.

Mechanical stuff, follow above advice.
One thing I'd add maybe, if it has been many months since started, pull spark plugs, rotate engine with ratchet. Reinsert plugs. start.