Tips for granting levels needed world of Warcraft

Hi all, last week I bought 4 new wow accounts for the RAF bonus. Here is how I linked them, account A being my main account I use for boosting:

B > C
A
D > E

Account A is linked to account's B and D

I did this with little research thinking I could get a free 80 from accounts B and D. But after doing some research it seems like I could Make a few level 41 accounts on B and D grant them to 40 on account A and use the 80's on account B and D to get two free 80's on account A instead of one. Can someone please tell me what I should do in what order so I can attain the highest number of 80's on account A please? Thanks!