alright, its nearly a month later and we have been making a ton of progress as we leave for our road trip in...18 days.
last weekend we made the cabinet doors (all except one) and did successfully execute the window a/c in the cabinet - its sitting in a drain pan. this weekend we got the floor in. lots of other little tidbits.
distribution panel - 110v working - still need to do the 12v
cooktop & pumps..
countertop in bath not installed, just dry fit
traded in old propane tanks, painted new ones...
AC in cabinet. door will be vented.
drip pan has a copper tube flared to create a flange, then a small hole driven through floor and pipe inserted. a flexible tube will be clamped on so it can be stored and not seen when not in use.
the drip pan, lined with aluminum, silicone overkill in corners...
also to follow up. this weekend we installed and tested the $150 Marey on-demand HW heater (LP w/ batt ignition). my concern was that it might not heat the water very hot - it was TOO HOT! and boy did it heat fast! immediate HOT HOT water. VERY happy with attempting this install despite having no predecessor (that i know of) trying this in an AS. only time will tell how long it lasts, but it does come with a 3yr warranty.
simple to install, must be vented (we used existing 4" - 5" furnace vent).