Darren, I remember the thread about the damage to your A3-31. That must really stink given we have to wait three months for these things to show up. Sorry about your ordeal, but it will be worth the wait.
Well, it wasn't pretty. I did something similar to what Alex Silva described back in your thread about lifting straps.
1) Unbolted the four brackets holding down the J/P
2) Scooted the J/P off the 2x4s running perpendicular to the pallet
3) Pried off these 2x4s as they just get in the way
4) Ordered a Milwaukee right angle attachment for my drill - waited
5) "Walked" the J/P to the edge of the pallet - Fairly easy
6) My son was home from college, but I didn't use him for help until the final step. Just FYI, it was easier than I thought doing this by myself.
7) Got several 2x4/6s and by angling the J/P between the slats in the pallet and using the 2xs for stability was able to get enough room to drill with the angle attachment.
8) Picture the J/P at a 30 degree angle on the pallet with me on the floor hoping the 700 lbs wouldn't decide to move.
9) Anyway, one side has zero holes and you have to locate and drill them. The other side has holes but they need to be enlarged slightly for the caster stem.
10) I went to 1/2" as I didn't have a 15/32" bit and using a washer everything fits tight.
11) Anyway, you have to man handle the J/P around and get each end hanging off the pallet and then tilt it up, drill, then do the next one. Don't put in the casters until all holes are drilled.
12) Once I had the holes all drilled, I basically put 1/2 of the J/P off the pallet and 1/2 half of it on, and put the casters on. You'll need a good 19mm ratcheting box-end wrench to help secure the nuts that are inside the cabinet.
13) At this point my son helped me get the other half off the pallet. Another option would have been to just cut the pallet sides and roll it out.
In the end, I really didn't need the right-angle attachment as you can really tilt the J/P and have enough room for the drill and bit. Stubby bits would have been helpful, but all I had were full sized bits. Also, I only smacked myself in the jaw once with the drill when the bit "torqued".
Just take your time and be careful.