On electrical, I am going the opposite. My goal is to have a panel that rivals the cockpit of an F-16. I will build in a laptop connected to a panel mounted monitor // TV along with a marine stereo head unit. Speakers in the cabin and the galley. I will use a powered digital TV antenna and use the tuner in the TV for over-the-air broadcast TV reception — which is surprisingly widely available! Also putting a dedicated 4G WIFI hotspot. 115V inverter, as well as pass-through 115V (for use when “shore power” is available). I have located a 250 watt electric heater which ought to be enough for the small cabin volume. Considering this is as well : http://www.climaterightair.com/applications/rv-trailer-air-conditioning-and-heating/climateright-5000-btu-a-c-heater.html
It’s $500 but for the primary purpose I plan to use the TD for it might make sense.
I’ll use it for camping and such of course, but my “couple times a week” use will be a portable break / nap “pod” for work. My work involves real time operations control that runs 24/7, and I’m “on console” on a 2-on, 2-off schedule. When working a night shift, having a napping spot from 0100 to 0300 sounds mighty nice. I have to remain on call and close by, of course.