Moondancers prices are right on. Installation
of the genset will add $3-5K. Don't buy too big of a genset. A 5 KW will work fine and will run and start two 16,000 BTU A/Cs if you install a Dometic Smart Start to reduce starting current
You can put a 150 watt solar panel on the top of your davits which is an easy installation
. The cost of the panel, controller, wire and tubing and fittings will only be $750 or so. I wouldn't install any more panel capacity with a genset on board.
makes good davits for almost any sailboat.