Just so I didn't screw up RAF, did some work on grantable levels for a team of 5 with link a-b-c-d-e. And then thought i'd share.
If you want 10 teams, technically you only need to level 6 teams and then do transfers to account E for 4 level 60 toons. Or something like that.
And if my maths is wrong please go ahead and call me an idiot. I do it all the time.
edit: Also thinking about it, always grant first with lowest level toon due to level caps
