I would use the Jamis.Have the wheels checked,service what needs done,pack my stuff and hit the road.You don't need anything special to figure out if you like touring or not.
In fact,if the Monkey Wards bike was all I had,I'd do the same.
My first few tours were on a sport bike with 52-42 gearing and a 12-16 corncob on the back.I had one of those springy type racks hoseclamped on the back with old paperboy type saddlebags slung on the back.Had a blast!
Go Man Go!......