The LRA for your Coleman is 58 amps. That's pretty high for a 9.2k btu unit. Out of curiousity, what kind/size of generator are you trying to power your a/c with? If you can get your LRA/inrush down in the very low 50's (with a hard-start kit or a different unit altogether), you'll dramatically increase your chances of starting/running it with a single Honda EU2000i (ECO mode on) or Yamaha EF2400iSHC. I've found the inrush threshold for successfully starting/running an a/c unit with one EU2000i (ECO mode on) is approx. 50-51 amps.