12 year financing is very common. 20 year was common and might be still available.
If you cannot afford double payments then the 12 year loan is the correct financing for you. A shorter loan would only increase your payments.
Yes the trailer will last 12+ years as long as you take care of your stuff. Good luck if the extended family gets invited.
The first 50% of value depreciates fairly quick then it will slow a bit. Go to NADA and find your model 10 years old to get a rough idea. No worries. Just enjoy the time you have before the kids are grown and gone.
