Since it seems it will be at least a few days before you get started... Go ahead and start spraying stuff with PB Blaster, especially the upper rear shock mounts.
It is amazing what this stuff will free up if you let it soak for a couple days. I did this and have never broken a suspension bolt on my XJ, and I have had it at 2",3",4.5", and 6" over it's lifetime.
Fortunately, my Jeep really didn't have rust to deal with......However, when I first got my F150 (DD), the rear diff check plug was extremely tight and rusted (truck was from Michigan). I was at the point of almost stripping it, so I stopped and sprayed it for a few days with PB. When I went back out to check it, the plug came right out with little effort!
BFH generally means a sledge, the smaller handheld ones.
A dead blow comes in handy as well, it's kinda like a rubber mallet, but without the kickback, not really a BFH though.
Just don't use a claw hammer, they are for wood!