Looking at something like the Xantrex IP1012 that is ignition protected (install in big dry engine compartment) and can do 3 jobs. Inverter, battery charger, automatic shore switching. Discontinued but still can be found.
http://www.ebay.com/itm/XANTREX-IP1012A ... 687wt_1139The marinaire mirca AC only draws 650w maximum running and maximum of 900 surge starting. The IP1012 is rated for 1000w continuous and 3000 surge.
I also understand I will be sacrificing a cuddy storage compartment ( gotta do some measurements to make sure it will all fit ) for AC, breaker panel, and AC controls and that they will be at feet level, unless there is a room on the back side of the 205 driver's panel to install the breaker/control.