i may just have to try the ling longs

Instead of buying drop axles you could just add a section of 4" x?  tube to the frame and remount the hangers. IMO,that would be a much better option.

i have thought about buying another one but this one is paid for! it def needs atleast 2" more ground clearence as i have ripped of 3 sets of stabilizer scissor jacks in my yard and a driveway in great bend kansas and the filling station in hot lava springs id lol there are literally pieces of my th'er across the US lol   i really think 4" drop axles under the leaf springs will get the job done. probably have to still put atleast 3" tall wheel wells in even for that.

Up the axle rating. Make sure the inflated diameter of the tires you will use before deciding on relocating any hangers. Upping the spring rate will make for a lot more roughness to the ride of the trailer if not needed to carry the load. What tires are you planning on running? LT's or ST's? IMO almost all ST's are junk with a few exceptions in the higher ratings. Price has almost zero to do with the tires quality for the most part.

what i have now are 5200 lb dexter axles. lci (lippert) bought dexter a while ago but i planned on sticking with dexter. i know i can go to 6k lb axles and re use my brakes. now according to dexter, there needs to be a min of 1" clearance between the tires which i would have going to the larger wheel. not sure how comfortable i would be with that but the alternative would be to cut the front and rear perch off and move them to install longer leaf springs as the larger wheels are suppose to have. according to etailer there is suppose to be 4" between them. https://www.etrailer.com/question-163957.html  that's no big deal and i can make a small jig to capture those locations re using the center location. won't be fun and will take a bit of time and i know i will need to check the alignment after words. there is a company in town that does alignments on big and small trailers, they cold bend the axles last i knew. there alignment kits you can add to the perches but they lift it 2" and i'm not wanting to go up any higher lol   the simple thing to do would be to put 4 to 5" tall wheel wells in, go with 6k lb straight axles ( on top the leaf spring) and check clearance between tires.  i know i don't currently have an alignment issue as the original tires lasted 5 years. my only thought was if i was going to go drop axles and move everything for max clearance to floor, frame etc etc then i would just go to the 6k's for peace of mind.