We decided on this TV model: ZYCOM ZFD22WHDMI 22 INCH OVERHEAD FLIP DOWN MONITOR WITH HDMI INPUT.
Yes, it is a 22-inch, but in my opinion a 22'' screen is large enough for viewing from the lounging space on the bed(s). Too large can be a waste of money without gaining much in quality of the picture. After reading up on the subject, today's monitors with increased pixels provide ample clarity in color and depth. The 22" monitor is what has come standard in 30' Airstream bedrooms for years, and we found it a perfect size from the bed, and easy on the eyes. The other consideration for this model was the physical space used under that bulkhead over the nightstand. The monitor we bought folds up to a depth of only 1-5/8". This is neat and compact. Lastly, Jason investigated this model and concluded that this was a good choice, being that it is 12 volt and has HDMI input. Jason also confirmed that this model is well within the rules to comply with the egress window specifications.
Next, we have had experience with Furrion radios and did not find them to be user friendly. After owning 4 Airstreams and the last two having a Polk Audio system, we decided we wanted a Polk system in our Ollie as well. This is the model: Polk Ultramarine WB/USB/SiriusXM Ready/iPod & iPhone Ready/Bluetooth with App Control. Note that this unit is marine grade and has Sirius capability. We love our Sirius for music and weather when up in the mountains where only Satellite is available. (An annual Sirius radio subscription is very inexpensive compared to a TV satellite subscription, and we find it even more helpful/entertaining.) Jason investigated this radio and agrees that it will be an easy swap-out. Note that this is considered an upgrade, but from previous experiences, we feel it is worth it.
Lastly, the DVD/Blu-Ray. Will purchase and drop ship to Jason, as we have the other items. We chose a middle of the road player. Not as concerned with a high-end model since we don't use the DVD as often as our Apple TV (or my Sirius 60's tunes serenading cocktail hour as we watch the sunset over the mountains.) The DVD player is not 12 volt, and I am not sure if such a thing is even available. Again, this does not concern me, as we will use our DVD less often than most. To me, it is more important that the television & radio system be 12 volt.
All of this is included on our work order and accepted by OTT. Thus, it is their responsibility to get the wiring and functionality correct.
I hope this helps in your decision-making. My decisions were mostly personal, and I am no expert.