We are about to start completely remodeling our mobile home and want to switch from central air to mini splits. In doing research I've come across 2 questions that I can't find an answer to. Everything I've found says to place the air handlers 7 to 8 ft above the floor but 8 inches below the ceiling. My walls are 7 ft high so obviously i don't have room for those numbers. Would placing them 6.5 ft above the floor work? Second question is will a 12000 btu unit be enough for a 16×26 ft living room and kitchen? It's completely open with no wall, bar, or counters. We're on the Texas coast and the house runs lengthwise almost straight east to west with the front door facing south, and will be redoing all the insulation in the ceiling, walls, and floor.