Hello all. we are building a new home. am going to install a split system in room under stairs in turret. it is about 500 cu ft. will be putting closed cell foam in walls and ceiling of that room. the door will be wood/glass and fully insulated. is there anything else i can do to be sure that i will not experience any condensation on the glass of the door? we are in fl. home temp will be 73 and cellar temp will be 55. thanks.