Hi there!
I'm Pranav, from India.
I just read through the project description and I seem to understand that you already have the schematic more or less complete, and not the PCB. You need some help in completing the schematic and laying out the PCB again + rerouting the traces.
In my opinion, the PCB doesn't need to be any bigger than the ZigBee adapter, with careful component placing and routing. But if that isn't possible, I'll try my best to keep it as small as possible.
You can see my reviews to understand that I specialize in miniaturizing PCB layouts, and designing PCBs for wearable electronics. Those things are pretty small, and generally cost < $10 on OSHPark for fabrication:)
My bid amount consists of the following:
* Reviewing the schematic, making any changes / additions to it as required.
* Reviewing the PCB layout. Laying it out again to make it as small as possible.
* Hand routing the traces to get the best of space / performance. RF circuits need special considerations.
* Generating Gerber files for fabrication (although I'm sure you know how to do that, being an EAGLE user)
* BoM (That too you'll be happier using EAGLE :) ). Since these are a part of my package, they will be delivered to you in a zipped file.
Along with that, a long time of support (basically as long as I can remember the project).
I hope the deal excites you, as much as your project has excited me. It will only take me a day to get this done.
Looking forward...
With regards,
Pranav