Q. Can you set the maximum amount for the bidding so I don't over bid too much?

Yes the maximum bid function is already builded in the software. You can set this by going into "File/Engine Profile" and in under each engine's setting, you can set what Maximum bid you want to go up to. Once this has been set, none of the bids will go over the maximum that has been set.

In addition to this you can also set the maximum and minimum for each individual keywords inside the "Autobid" function.