Is fairly easy to change springs with the right tools. You'll def need a set of spring compressor's.
Take shock's out take, top-hat off, swap springs, put back together. The hardest bit is getting the shocks out cause the bolts (bottom) are pretty darn tight. You could prob take the bump stops out while your at it, then just get w/align
Just curious, how hard is it to use spring compressors? How much roughly is it to just get a shop to change the springs?