need a top notch CODER to create a links system

I own 160 websites that are with different content and pr, they're all wordpress blogs. What I'm trying to do is to create a system that will allow visitors to place there links on my sites in exchange for money. Example: you build the site [login to view URL] for me. In this site we will have groups of websites(wp blogs), total of 160 websites(Of course I will add more blogs in the future, so I will need an option through my admin panel to add more sites in the future). A visitor is in the site wants to place his website link on 25 different websites out of the 160 we're offering, he will be direct automatically to paypal to make the payment and 25 links will be placed on these sites automatically(I don't need to place them manually). The site will be divided to sections by page rank, alexa ranking? and year the site is active, also if they want their link to be in the home page or a sub-page. Since the page rank of my sites will go higher(or lower, who knows), I would like it to be updated on the website all the time. Basically our site is offering only links for websites. I need admin panels for the purchasers, there they will have options to add more links, eraze links they bought, change passwords, account info, etc. I need a good admin panel for me, to add websites, change prices, change package deals I offer and all other options that will help me maintain this business in the easiest way possible. I also need in my admin panel an option to send emails to all the addresses I have in my database in one click(I just need to write the email). I want the system to be able to charge automatically every months the old purchasers unless if they have canceled the service. Very straightforward, simple. Please send all bids, I need it asap Please look at [login to view URL] because we will do this functions here very similar to this website.