Doctors database

I need someone to bulid and maintain me a databse. I have attached a file of what describes best what i need but i need the work completing by September.
I am setting up my own business and am scheduled to go live in spetmebr 08.
I have an independant person already working on my webiste so it is just the database work i need doing.
The database is to hold doctors details and hospital details and is to alloow me to do various searches on the hopsital and doctors information. This would need to be highly secure as it will be holding confidential documents so should not be linked to the web.
I have a personal friend who can build me the database but is a bit worried that if anything went wrong he would not be able to assist as short notice.
I would need to get this started as soon as possible due to my deadline and feel that I would need a conversation with regards to the above whether this time period is realistic.