Sounds like the advice you want would be better provided by calling a residential real estate agent in your area and asking what a Drop Ceiling versus Drywall does to the resale value of homes in your area.
Personally, I can't see it affecting the valuation by more than a couple hundred bucks either way, but that's me.
Personally, I can't see it affecting the valuation by more than a couple hundred bucks either way, but that's me.