Luxury vs. Mid-level Pushers

One thing I would check out very carefully is whether you'll have a quiet enough environment in your motorhome for voiceover work. Most units are not very well acoustically isolated from the outside and even less so from the rest of the interior. Campgrounds are not always the quietest locales, either, with often close neighbors and excited kids and maybe train tracks or airports not far off.

If you could plan on doing that part of your work in local studios wherever you happen to end up, it may open up some more possibilities for RV models and I think might work out better overall.