With the undiluted joy that is RAF leveling, the maturity of the tools to cheaply software box, the guidance here on doing it effectively, and the fact that the battlechests pay for themselves* (even before you count special Black Friday prices) balanced against the (very high) risk of losing all the accounts?

Get new accounts. Multi boxing generates significant scrutiny from blizzard. As in "run the script to identify all multiboxers that are active right now, then check the name fields on those accounts and spit out the banlist".

And you can boost the first few instances with damn near any high level toon you want.

(*battle chest costs $30 if you look around. You get the 10 day trial from the RAF invite, a free month on the new account, and the veteran account gets a free month, so you get 70 days of playtime across two accounts for the cost of the battlechest. It quite literally pays for itself).