You mentioned having more room in a class C than in a hotel room... You really need to rent a Class C in the size you are wanting to buy, because I have a feeling you're going to be surprised. Even though the square footage may be similar, due to the width limitations on motrohomes you will feel much more "squeezed" into the RV. Plus, wait til the first time you use the onboard shower.
Again, not trying to dash your hopes, I just think you're limiting yourself by narrowing your search to a Class C before you even see them in person. JMHO
Doug