The more I read about modal theory the more confused I am becoming. I have memorized all the modes, and "quizz" myself with them, and move them around up and down the neck.

The problem is that I'm starting to feel clostrophobic about them now. Like in an above post Dev is mentioning playing an A mixo scale, but his notes are running into the G lydian box. So can I play G lydian as well as the A mixo ?

As long as the scale format for mixo falls on the A, can I play anywhere on the neck such as Ionian in C?