Sherdep, Thanks for you post. I ultimately purchased the Rockwood Mini 2502s instead of the 2306. I did not get the heated tank option. I figured I would "ease" into cold weather camping and I found this company for aftermarket application of heated tanks and dumps. UltraHeat, Inc. - Easy to Retrofit
I am lead to believe they might even be the supplier of the OEM tank heaters for many of the RV manufacturers.
Anyway, I my option package did include the heated mattress and I am looking at the possibility of placing some insulation around the bed area in the basement bay that's under the bed.
I pick up the unit at the end of the month in Ohio, subject to weather of course. Then I am headed your way in the following weeks for the first run. Actually I will be on the west coast in The Cedar Key area.
Thanks again and great camping,