I have done all of the suggestions: wood blocks, rollers, axle flip and in an old trailer I changed to a straight axle from a 3inch drop axle even bigger tires.
I would say blocks are the easiest and cheapest though they do not work well with turns. Trying to lay boards on the correct radius is tough and takes two people because you can never watch your blind side.
For me, rollers work better than nothing and do not take as much weight or stress as one might think in a fairly straight line. Think about the leaf springs, they will continue to hold some weight until the tires are off the ground. Most people jack up a trailer from under the axle because it only takes an inch or so to get the tire off the ground. But if you jack from the frame you must raise maybe 6-8inches to unload the leaf spring. If your going to drag, and most all trailers do at some time, better to have less friction less stress on the frame. All this said do not install rollers on the bumper and the further forward on the frame you can do the better structurally near a cross member would be good. When I did mine I rebuilt the triangle drag braces and mounted the rollers so that they were just barely lower. This is not a solution only better than nothing also dragging in a straight line is less stress than in turns.
The one that solved it for me was the axle flip or axle change out. Axle flips usually give a 5 ¼ inch raise and you should change the hitch height to be level . Axle flips are cheap, 24$ for parts on my trailer, but it does change the center of gravity. The more expensive and probably better way is to build and install a sub frame between suspension and main frame. This can give any height, 3inch maybe, but you will have to realign axles and I did not want that much work and head ache. Here is another positive reason for axle flip, you can always flip it back if it wasn’t right for your trailer and its easer the second time.
And last, I believe you are worried about a trailer you don’t even have yet so you really will just have to wait an see if there even is an issue. Placement of the axle, how the frame is designed, size of tire….will determine any issues. Might even be better/easier to just redesign the driveway.
Good luck and repost, I find it fun to listen to how others have similar issues and how they solved.
Keep the shiny side up and the dirty side down