I would suggest doing the following:
Vet ToonA -> 59.9
Vet ToonB -> 32.9
Friend ToonA -> 60.1

Grant 1 lvl to Vet ToonA to 60.9, Grant 28 lvls to Vet ToonB to 60.9

Then repeat if you want 6 toons (and again if you want 9). I might ponder adding a third account as it might make sense to transfer a pally (or mage I suppose) over at lvl 60.9 who can gear up a bit in Outland greens for boosting.