 Today, split ductless is very, very efficient, and especially due to the inverter technology, they really run more inexpensively than ever before. So certainly that's an option for you. You have to be strategic about how many units you need and where you place them, and if you want to do it yourself or you want to hire a professional. On the DIY side, there's companies like Mr. Cool that have systems that are designed for do-it-yourselfers. The lines are pre-charged, so if you're handy, you certainly could do that yourself, or you could hire a pro.