If advice is requested by unsuspecting buyers then one should err on the side of caution.
Towing with marginal vehicles can be risky and having a buffer is optimal.
I'd rather see all RVers keeping safe on the highway and having a tow vehicle equipped to tow the trailers GVWR and having the payload for passengers, cargo and tounge weight.....is not such a bad idea.
Alternatively we could ask the OP to give us in detail every single item that goes into the RV, right down to paper plates and solo cups.
Then we can advice against a formidable tow vehicle.