Android application advice

I need an android application built that would serve as a secure kiosk browser. meaning it would be locked into a specific application or website and prevents public from venturing elsewhere. What i need are these basic elements: 1. Kiosk Mode: Locks Android tablet into specific application 2. Render the Home, back and other navigation buttons useless. 3. Application will Access a MySql db on server 4. Search and navigate through database records 5. Activate and take pictures from tablet webcam 6. upload new records with images Before I enter into this project I want to know what I am looking at in terms of limitations, cost and functionality. You will be paid for communicating with me on msn messenger and answering some questions and offering advice and even a quote.