beginnings of a new app

I hope I am not biting off more than I can chew, but I have this idea for the Alpine Nature Center app.  The interface will look something like this (without the black guidelines):

I am planning to have static map of Lambert Park, an mini app that allows users to mark where they parked their car, a mini app to choose a trail head - complete with directions of how to get there from their current location, mini quiz on flowers and birds, a link back to alpinenaturecenter.com, and a pedometer. Phew. I need to get coding!!!

My sister Judy should be on her way back from the Holy Land, just in time to give me feedback and fetch me GPS coordinates. Stay tuned, this should be awesome :)