Well your diagnosis of both failures seems correct, although the compressor not starting could be due to a voltage problem, perhaps due to a small shore power cord or a bad shore power outlet. Check the voltage at the A/C power terminals when it tries to start. The high inrush current will definitely drop the voltage but anything more than 5 volts is a problem.
The other unit does sound like low freon, but you will probably spend a decent fraction of a new unit's cost to service it.
I don't have any suggestions on replacements.
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