Will This Be a Bad Move for a New RVer?

My experience, I grew up driving dump trucks and buses, sometimes a trailer behind the dump. Then for reasons I won't get into went to Hershey RV show and bought a 40 ft triple axle cyclone toy hauler. I pulled it with F-250 srw, but I never put toys in it. I did upgrade to a f450 dually, which handled much better.

Anyway, it can be done and it looks like you are being smarter than me by starting with the big truck.