Our Ram 1500
just completed 300 miles today of a planned 2,000 mile trip cross country. It has already taken us coast-to-coast twice and border-to-border three times. We ride smoothly and comfortably with and without the Airstream attached. An inexpensive truck to buy, maintain, and drive, it does a great job.
We manage our loads in the truck and Airstream, and use a ProPride hitch for rock-solid stability on the road.
Not sure what year Safari 30 you plan to tow, the early ones were lighter than current model 30's, so that information would help. Yes, get the trailer first, then a tow vehicle to match.