40-boxing

[zanthor]

I'd counted, that you'll need something like:
3 computers each like

and 10-50mbit connection.

I don't really think, that it is possible to level up 40 shamans at one time, so you'll need to level up each of them separately. If you'll hire comand (10ppl) of masters, they will level up it instead of you. In another case, you'll need to spend like year to grind all shamans up to 80lvl (8 day per each).
Although, you'll need to spend 600$ per month \ 7.2k$ per year on accounts.

What do you think about this guys?

For simplicity and cost I'd go with 4 machines @ 10 clients per machine, and 24" displays with IS/ISBoxer managing the PIP action for you.

As for bandwidth you don't need 10mbit... dear god the games designed to run on around 100kb.