very much agree with Kedash.

Multiboxing is high profile, both to other players and it's very easy to see from Blizzard's end.

Higher scrutiny that way. Single boxers sharing accounts can get banned, multi-boxers will get banned.

And you say you "have access". Be careful that any characters that will be receiving keyclone commands (or the like) are on accounts with identical names for the owner. Multi-boxing forces you to comply perfectly with the ToS regarding account sharing.