Hi there, all!

So, I'm about to buy an IEM System and a Wireless Guitar System, and with those I'm going to use my trusty Boss GT-Pro Rack Processor.
One question, though.. - How do I connect all this to make it run perfectly?

Obviously it starts with Guitar to GT-Pro input and the MIDI Cable running to the FC-300 MIDI Controller. But where to go from there? What's going to run from the GT's Output and so forth?

By the way, I'm running to the PA at our gigs, using a D.I. Box.