Set-up for 4 aux inputs...

[N7KI]

I';m using a Crius AIOP V1 with Multiwii 2.2 and was looking for good ideas to set up the four aux switches for best usage.  I also have a GPS installed on the board.   Using Turnigy 9x with er9x firmware.  I have Aux1 as the 3 position switch. 
Ust want to make sure I don';t have two things on at the same that could cause a crash or which things need to be turned on sequentially or what things could be on at the same time.