Buying our 1st travel trailer. Questions on a pioneer QB300

Towing will be with a diesel f-250. Also looking to keep it for atleast 10 years.

We have looked at used but honestly around our area we find comparable trailers for about 15-16k. Hard to justify spending 16k when you can have something new for 3k new.

For right now it would just be myself, Wife and our baby. Hence why we like the back room to put the baby to sleep in and won’t have to bother waking him up.