I’m also planning on no solar if I can find one. Most likely we’re going to utilize a renogy 40 amp dc to dc charger for both the trailer and a battery bank in the truck to run a additional freezer/fridge. We have a lot of cloudy days in the Midwest and as a family like to stay on the move.
As GG mentioned above the reinforcements are already installed on all trailers and for that reason I’d probably have them install the mounts down the road. The solar panels might be considerably more efficient in 10 years so waiting, if they’re not currently needed, might be a good idea.