busybean,
For some 12 years we camped in a '96 Jayco 1207 tent popup that, loaded, was around 3000lb. We towed it for 8 yrs with a Dodge Caravan with 3.3 V6 rated around 3500lb on which I'd installed a tran cooler (a real must-have). We pulled it often up through Banff and Jasper (Icefields Pkwy) areas and our Crater Lake and Glacier NPs, so the Mtns. are possible, as long as you are reasonably gentle to the rig! We usually had 2-3 teens along with us (and all the 'gear'), likely overloaded the poor van!
As moaboy said, as long as you don't plan to race, you'll likely be ok with the 2619 as long as you remember you're running at its limits ... and the Ody will likely do better than the old Caravan! It sounds like a great way for you to explore trailering!