Your floors are insulated with your plumbing traveling through it and you have a heat register with fan
that heats all your bay area tanks.
Oasis information can be found in QT's # 3
, PDR John's and DS Don's MOD Sections.
You have more than I did and we camped in 1* temps for extended periods.
All the links below in my signature have links to many more for your Newmar.