Trading Airstreams costs a fortune. Pick the size and model you like, then decide how you're going to load and use it, and how far your plan to travel in the initial years.
Then do the research and decide if you're truck is adequate to get started. It might be.
Some people need a 3/4 ton diesel to pull a 25 and some tow Classics with a 1/2 ton. Not everyone's use, load, and expectations are the same.
Doug and Cheryl
2012 FC RB, Michelin 16, ProPride 1400
2016 Ram 1500 Laramie Crew Cab 4X4 Ecodiesel 3.92 axles
The Truth is More Important Than the Facts