If I were to do RAF again this is how I would set it up with my 5 existing accounts. I would take account 1 as my booster. Account 2 would RAF account a, and account 3 would RAF account b. This would result in only buying 2 new accounts, and 2 paid transfers (per toon) and get 4 toons 3x raf xp bonus. I also would not buy the RAF accounts any expansion sets, unless you are specifically needing a Bloodelf, Goatman or DK to reduce costs as well.