313499 Joomla/MySQL/PHP expert needed

I am the owner of a web page for artists. I need a programmer who can take a basic web page that I have created in Joomla and set up the more technical aspects of the site. I have created a basic site with a Joomla template but need more advanced functionality. I am ready to move forward with this project immediately and would like it done in a fairly short time frame. The basic idea of my website is that art galleries can come to my site and fill out a form that describes an opportunity for artists (call for entry, art contests, etc.). I need to be able to manage this information as it is submitted and make it available to artists who subscribe to my website. I need the following funtionality added to this site: 1- I need to be able to have people register on my site, pay with a credit card, and then have immediate access to a portion of the site that is only available to paid customers. This must be a very streamlined process. Subscribers need to be able to log in and manage their account details also, such as updating an email address. I need the ability to manage subscription rates for a 1 or 2 year subscription and also for a few alternative subscription options. They will need to check a box that states that they have read and agree to the terms and conditions of site use. Upon a successful payment, the system will activate the membership and will send a confirmation email to the new member so that they can log in immediately. 2- A site visitor will be able to submit an event/opportunity. The form will collect their organization name, their full name, phone number, email address, full physical address, opportunity title, due date, type (drop-down), awards value, web page address, web address for their prospectus, a picture or logo(jpeg) that represents their event and a full description. The system will save the opportunity in a pending queue for admin review that will allow me to edit them and make them live in the portion of the web page for paid subscribers. (as a note: I have already created a form with the RSForms! module that allows galleries to submit information about their art contests, you could work off this or create a new form). I need the ability to view items being submitted, edit them, and then make them live on the web page. 3- I need to make it so that artists who subscribe to my website can view these event submissions, potentially 1000+ listings. I would like for each individual subscriber to be able to sort these listings by date, type, $ amount, location and other key subcategories. A search function would also be very nice. The system will return a listing of all those that matched the given criteria, organized by date with the newest at the top. The listing will show full information for the opportunity. 4- I need to include a standard “Tell a Friend” feature. 5- I need to have a way for people to subscribe to a free email newsletter by providing their name and email. I need for it to require them to opt-in or at the very least opt-out of the newsletter. I currently have a list of about 750+ people to start this list out with and expect to have as many as 40,000+ on this free newsletter. I need the ability to manage the site newletter and subscriptions. I have a competitor who has a web site at [login to view URL] who has set up their web page to perform very much like I want mine to be. Please view their web site and click on each of the 7 tabs along the top to get an idea of what they do. This will give you a pretty good idea of what I envision for my site as far as functionality goes. I would like a quote for each of the five items priced individually and then a total quote for all five things. If I like your work I will likely have other projects for you!