Helo there,
Just read over your project application, to create a special display only for mobile without changing main themes itself. My name is Shelingholmes, i am Wordpress developer, 3 years experience in this field especially tweaking & plugin development ..
I have take a look to PSD design, i could built it seperated with main themes, but still using same database & installation. I could create plugins for this, so your site is free from causing any fatal error & always safe from file upgrade..
I will create it with clean coded, customizeable in term of display / not, and other setting that will make change more easier ( if necessary ).
For consideration, please take a moment to visit my profile, there are some reviews & portfolio related wordpress & mobile design here..
Please let me know if you're interested, if possible, i would like to discuss further details related this project..
Thank you ^_^, and
Regards,
Shelingholmes