It's not hard at all to set up. However, if I remember right, you are looking at about $1300 for a single channel of API and it's a 10 band graphic EQ. That seems a little steep to me to take a gamble on whether or not it is going to work. Have you tried a graphic EQ like this before? Are you sure that it's what you need? My guess is that a good parametric is a better way to go. Maybe it just needs a better preamp or some compression? There are some pretty nice complete channel strips that I would maybe look into before sinking that kind of money into 1 channel of API EQ.
Don't get me wrong though, the API stuff is incredible. Just not the solution I might be looking to first if I were in your situation.