Other things to think about
I wanted to do the same type of thing. I didn't want a TV/DVD combo, as they were more expensive than buying the 2 items separately, and then if one part goes out, you have to replace the whole thing. Having a boat without an inboard and alternator, (Catalina 27 w/outboard), I also wanted low 12V power draw. I ended up buying a used Casio 10.4" LCD TV on e-Bay (I don't remember the model number - maybe 1100?). It uses about 2 amps. The thing was advertised as for 110V AC only, but after some research I found it actually runs on 12V DC, and just has an AC adaptor to plug it into the wall. Found a person selling one on e-Bay w/o the AC adaptor, which most people thought was require to use it, so I got it for cheap (like about $125 - list was about $300 then). Bought a $35 110V DVD player and a cigarette lighter inverter, both of which together use about 2.5 amps. Some cables, and I'm probably into the whole thing maybe $200, and burn less than 5 amps. I later bought another AC adaptor for the Casio to run it on 110V, and I use it to watch the news in my kitchen while cooking when I'm not on the boat.Mounted the back of the TV on a piece of acrylic which with snap-apart hinges allows it to attach to the underside of the deck in the main saloon and swing up to horizontal, out of the way. Is also easily removed to take home to the kitchen. The stereo audio output jacks allow the TV or DVD player to input into my stereo in the boat's cabin to get 4-speaker stereo.I keep the whole setup, plus about 10 DVDs in a soft-sided briefcase which allows it to be to easily moved to/from the boat. With that, I've also taken it on a friend's boat that I helped deliver to San Diego for last year's Baja HaHa. We watched Master & Commander in Santa Barbara while we recuperated after passing Pt Conception....Make sure you get a real TV (with tuner) so you can watch the local news and weather.