There are those who say all of us with RV's are crazy... I'm not among them.
And I'd never consider an upgrade from trailer to Class A crazy.. But I will warn.
class A's come in many different flavors but just two for this post
Gas and Diesel
Most Gassers. like mine, come with a 5000 pound rated hitch.. This is 5KPound only if the tow bar is straight (no drop or rise adapter) Drop or rise adapters seriously degrade it.
Also the Motor home may not be able to tow 5000 pounds. Mine for example can only tow 4000. (Hitch can do 5 but MH only 4) difference between Max Combined GVW and actual Motor HOme GVW a scaled.
Your JEEP may be too heavy for a gasser.
Big D's on the other hand cost about 2x what a gasser costs up front
But also pull 2x. Your jeep won't be a problem
Do not forget an aux brake system for the Jeep. There is one (I think M&G ) that is 100% "Transparant" to the driver of the jeep. You will not see or feel ANYTHING inside the jeep because there is nothing inside the jeep. it is 100% under the hood. Runs on air pressure which most Big D's use for brakes as well.