And more on the trailer.
My EEE-14 is known for a weakness in the frame where it bends up to the tongue just in front of the trailer. The usual fix is a couple "flitch" plates welded on either side. I did that two years ago and it cost too much (IMHO) but I am very glad I got to it before my last trip.
If you know of any weaknesses in your particular trailer, it's past time to attend to them.
Two years ago when I was doing some cosmetic repair and checking things over I found cracks and holes in the GRP in front of both wheel wells. I was very fortunate. Both to find the failures and to have borrowed a shop with
fiberglass repair materials and to have the skills to fix the problems.
It's more than worth it to get some space, preferably indoors, with a nice flat slab and electric power. Put the trailer on jack stands set all the way high, get a bright flashlight and a really bright trouble
light, put on safety glasses and use a creeper to roll around beneath the trailer, poking, scraping and maybe hammering a little. Take pics of anything strange or horrifying to help your meditations on the subject.
Then set the really bright trouble
light to aim up at one section and get yourself into the trailer and open up that spot above (open the lockers, closet, whatever) and see if you find
light coming through. Track down anything worrisome and see if it's trouble. Move the light below and repeat above.
Many of us have old trailers. We really need to do this once a year. Newer trailers, well, you can stay luckier for longer, but it's still a good idea.
Based on my experience I think just driving the interstates can beat a small trailer up. Potholes, bridge aprons, sloppy highway repairs, loose gravel, the occasional washboard road, etc etc.
Cheers,
Rufus