I know how you feel about the garage becoming a storage room, not to mention a clothes drying room! Might have to look at a dryer one day, but a walk-in wardrobe doesn't seem to compensate for lack of other storage spaces.
We got a 4-way aircon in our new place, single outdoor unit with an indoor unit in the living room and each bedroom. Really glad we did that. Not sure how to convince the financial controller to let me use it more!