mic + headphone+ pushbutton to ipod? check my drawing

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here is what I am trying to do. I am createing a little box I can mount to my motohelmet. the box has 2 3.5mm TRS inputs, a push button to receive calls, and one 3.5mm TRRS output (shown as another input though). this allows me to plug in earbuds, a pc mic and use them on my Droid X phone. I needed to seperate the mic and the push button basicly allowing me to mount the mic in my helmet. this is a rough draft. anyone see any problems with it? I know its hard to follow sorry.
An externally hosted image should be here but it was not working when we last tested it.
 
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