Hi,
I'm an experienced PHP web developer, I've built similar scripts before and have vast experience in building scripts for multiple installs, efficient scripts and using mySQL with PHP. I'm also capable of providing unlimited support for the script, if anything arises, or a new install is needed, I can sort it out within hours. I am comfortable I can have the script built, prepared and installed on your server within the project time specified!
I look forward to your consideration, Thanks!