wander....you are in an excellent place to learn a ton about solar and thus move into the reality of what a MH mounted solar system is capable. I will share some links with you to help you discover the realities and simplicity of solar. Boat / RV Solar Tutorial - Understanding the Basics of Solar Power
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HandyBob's Blog « Making off grid RV electrical systems work
So the balance you will be constrained to is space, weight, cost ... If you have enough room to mount enough batteries, enough panels and a big enough invertor.....( plus an unreal budget) you can run everything in your rig including your roof top AC unit. Take the roof top unit away from your scope and most (under $3000) installs will do you like living at home.
I am in middle of building a two 100w panel install with a Mppt charge converter and some monitoring equipment and will have about $900 invested. Now my inverter (will be a second project)....will be a 2200w unit that will add about $1100 to the project....I will be able to run the refrig, coffee pot , TV, stereo, laptops, medical equipment, water pump, interior lights and microwave. But not the roof top AC..... My 4 battery system could not store enough to handle that. In the end you will decide the type of service you can afford.