App Engine form page and an Android activity with map results

I'm not sure if this is a simple request or not but I would like to create a registration type form (name, address, city, state, some radio button choices, a few check boxes, a multi-line text box, etc, whatever) in Java or Python on Google App Engine that saves that data in GAE and geocodes the address fields and saves the lat and long in app engine also. Secondly, I'd like a simple google app with the Maps API that checks the phone's GPS, and displays the results from the GAE page that are within say 50 miles of the phone with a pin and a pop-up with the rest of the form information when the pin is clicked. This is really a proof-of-concept project for my boss and also so I can learn how to use App Engine so any adjustments ideas or improvements to the basic idea would be welcome. If this proof of concept project is approved the winning bidder will likely be asked to help create the entire project. It's not important if you use Java or Python for App Engine and how you send data with JSON or HTML post or whatever, I would hope the bidder has already done something like this before and will not take him/her much time or even has found a GAE/Android tutorial someone else has done and can use that. (btw would be cool if user logs into their google account before seeing the form like I've seen in some tutorials but it's not necessary). Best Regards, Mat