Android Mobile App

Hi, I'm wanting to have a mobile app built. The app centers around my local bus schedule. 1). I have a database (mysql) that contains the bus schedules, times, locations etc... 2). The app should automatically locate the closest stop to you and display the next arriving bus. 3). A person should be able to select several stops and have phone notifications slightly in advance. 4). The app should update it's schedule based on the data in the remote mysql database (on my server). I will handle updating that database. 5). The app should be easily updateable without any major complications or needing to reinstall I will work with you to provide graphics/mockups of the application. I would be interested in using something like phone gap/sencha but only if all the functionality above would work using those tools. Please provide me a quote and timeframe for this application.