I have the same problem, I ended up ordering an 18,000...I could not use ductless splits due to walls that were full of stuff already... Yesterday they told me they wanted the condenser on the other side of the building...so instead of 20' I have to go approx. 120'...oh well...
"Nothing else can poison our culture, corrupt our society or ruin the character of our people like unearned money or unearned opportunity." -- James R. Cook
"Fooling around with alternating current is just a waste of time. Nobody will use it, ever." Thomas Edison, 1889.