License and subscriptions selling&management system/website

Website for finance-related desktop application with user accounts, licenses and paid subscriptions management system. 1. Website: Would provide information about the application, its overview, short information about company, blog, users forum. No complex CMS is needed! It could be Wordpress (at least for the information pages, blog, homepage news etc; Wordpress-Zend Framework integration samples could be provided) or some other OOTB solution based (see below). Pages: - Homepage, - Application Overview, - User Account, - About, - Blog, - Forum, - Bugs reporting system, - Admin Panel. 2. User Accounts: Users should be able to create and manage their accounts. For each user account there is a key which is then inputed into the application. The application connects with a server and based on server's reply runs or not - this server component based on Ruby is ready. Registration should support Single Sign-On (implementation examples for Zend Framework could be provided). 3. Software License Management System: SLMS should be able to manage licenses. It needs to be flexible to support different types of licenses, e.g. free, discount and full ones. For paid licenses the first purchase contains software price and subscription fee. The length of subscription should be configurable. After initial purchase user needs to pay just the subscription fee, where discounts are possible (1 month, 6 months, 12 months etc). It should allow the administrator to have overview of the purchases and manage user accounts / licenses - block accounts, generate discount coupons etc. Preferred payment gateway would be one of the leading Polish payment gateways ([login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL] etc) but/or it should be easy to implement/add any payment gateway. The first milestone would be to build simple website (homepage, app overview, user accounts) that allow users to create their accounts and generate application keys, and admin to manage user accounts and application keys. Please show samples of your experience with similar projects. I'm expecting high quality work, using best practices all over the code. Preferred technologies: PHP (Zend Framework), Ruby (Sinatra, RoR, Active Merchant), PostgreSQL/MySQL or OOTB e-commerce solutions like: PHP: OpenCart, ZenCart, Magento, osCommerce, VirtueMart; Ruby: Spree etc though they might provide too much of overhead.