Optometry PMS system

I would like to develop an optometric practice management software package that is based on a mysql backend with a php web-browser front end (user interface) and both MS Office and OpenOffice intergration. This will be a modular based system. Module1: Client demographics appointment system automatic generation recall letters ability to send automatic sms text messages and e-mails basic marketing information Module 2: digital imaging integration, capture and storage of digital images from a variety of sources and scanners against individual client records Module 3: Full EPOS system to include product database with pricing, bar coding, VAT calculations integration with till drawer and receipt printing product specifications for dispensing of optical appliances integration with SAGE Module 4: Full electronic patient records