I agree with previous comments about perhaps doing a test ride as well.
I've toured with a variety of bicycles including Trek 520, Easy Racer Tour Easy, Trek 4500 mountain bike. I since sold the Tour Easy but do still have a Lightfoot Ranger LWB. The Lightfoot gets sold as a "recumbent mountain bike" with two 26 inch wheels. A few of my general perceptions from my touring and riding:
1. Except for places with lots of short sharp hills, I'm a little faster riding and touring on the recumbent than on my Trek 520. Austin, TX seems to have enough of these shorter hills that around there I found I'm a little faster on upright bikes. For long grades (e.g. USA west) I have similar speed climbing on the recumbent as on diamond frame bike and am a little faster on the flats. For shorter hills, the recumbent is heavier and this seems to add up.
2. Long wheelbase recumbent seems to do fine for most gravel roads in US/Canada. Again for those with worse corrugation I miss being able to stand to get through the worst bumps. So for on-road and a lot of off-road the recumbent would do fine. For some of the roads on my most recent ride (across Africa) I'm happy I was on a mountain bike and not my recumbent.
3. Recumbent exercises different muscles. I typically like some variety and hence if I'm doing a shorter weekend tour on one bike, I'll do my weekend commuting to work on the other bike. There are preferences here (sometimes very strong
) and hence useful to see what you like.
4. As mentioned, the larger of these recumbent bikes (such as TiRush or Tour Easy or my Lightfoot Ranger) with a larger rider such as myself really isn't much different in height as a small person on diamond frame bike - or for that matter two riders on a 26" tandem. There are good underseat racks as well as rear racks to take. My ranger has couplers, but is also big enough that it becomes more awkward to transport on on-way trips or ones involving flights.
Still do most of my touring on diamond frame bikes, but having a long wheelbase recumbent is a fun switch occasionally.