10-Boxing

I'm looking to 10-box in the near future.
And will most likely run two teams per faction.

I currently have nine sets of five-box teams, on my existing five accounts.
Short term, I'll level my existing teams (who will be part of the four 10-box teams).
I need to call billing, and have them merge my five existing accounts onto a single B.Net; the B.Net wide perks are starting to outweigh any advantage of separate B.Nets for each account.

After that, ...