Well it was also an intention of mine to at a later date, I would use account2 and account3 to invite account 4 and 5, and use account 1 for boosting.
But that will have to wait until I update my PC a little. So I don't want to clutter my accounts too much, and to give myself some good, unused combos.

At the moment I do have a spare, unused account, but it only has a few horde 70s on it, so unless i make a horde set, boosting with it is out of the question.

So far boxing has 100% recaptured my interest in the game, it was getting a tad stale for me.