I'm about to pull the trigger on a Mitsubishi Ductless system for our kitchen/living room area (all total about ~900 sq.ft). I had the local Mitsubishi dealer come out and give me an estimate and recommendations for my situation, and here are my possible options. First, the floor plan. The orange is the main level where the unit(s) will be placed. It's a tri-level home. The blue arrows show suggested placement of the units. One solution was one large 24K BTU unit placed on the wall in the dining room. The other was to do a split unit (9K one and 12K on the other) in the two blue arrowed locations. Problem with this solution is there is a set of kitchen cabinets that come out right above where "18" is marked on the diagram which blocks movement of air into the rest of the kitchen. We can't place any units on the 20' wall due to height limitations between the ceiling and windows (this would be the ideal situation). So, what is everyone's recommendation here? Two splits to cover the area more thoroughly with less overall BTUs (21K vs. 24K), or one larger, more centrally located unit (24K)?