Came to the conclusion to raf one account to the currently unlinked account, and then raf another to the new account. Since the unlinked account has some high levels on it, I can use it to run the other four which will then be two sets of linked accounts and will get the bonus etc so on and so forth and when/if they finally catch up to the one I am using to do the runs it will also just get the bonuses.

Will still check back for other thoughts but that gives me an a -> b and then c -> d -> e sort of linkage.

(Sorry if this topic isnt really multibox related and belongs elsewhere).