Inclinometer + Range Finder iPhone app

I have an app idea for a job specific app with 3 main features - 1) Inclinometer where you set a degree preset and the phone guides your phone to that angle 2) Range finder - Drag a pin on google earth to set a location then see a definable "arc" on the map of different sizes (50 meters, 100 meters etc). There's also a feature that tells you how far away you are from the set position 3) Wind speed of the current area through a global weather service (this is an optional)