Picking up trailer Saturday and question about hitch setup

If you want to get the hitch setup as close as you can, then set up the hitch while you're there. It really shouldn't take that long.

Hopefully there will be a flat level hard area nearby for you to park on and take your measurements. If you're in a hurry getting the front ride height at least halfway back to "unloaded" should be good enough to get you home.