Website design

I am posting this job on behalf of a friend who needs a website re-design. She is a personal trainer doing one to one sessions, group bootcamps, pilates classes and childrens urbanized dance classes.We would like to have specific pages to give information on each of the activities she does. There should also be testimonials, photo and video galleries, home, about us, contact us etc. She currently has a netwroking site hosted by ning.com. She would like to have some kind of social networking on this site. We are open to suggestions as to whether this should be done onsite, via a link to a site like ning.com or whether the best bet is to have her Facebook groups filter into the site. Another thing on the wishlist is to be able to take bookings and payments for bootcamps on the site. This doesn't need to be complicated there are a set number of places for each bootcamp and once they're all sold that's it. She has a Paypal account so a simple book now button that takes them through to Paypal would be fine. We would like to be able to manage the content of the site once it's finished. Also we would like to create password protected areas on the site to enable registered users to gain access to training materials specific to the course they are signed up to eg. Bootcampers have a login to go to the download page for their homework for that particular week. You don't need to re-invent the wheel with this site, we have the logo designed and a feel to the site sorted we just need someone to put it together in a workable format as above. Let me know if you are up to the challenge!