Authorize.net and PayPal related updates/customizations

Need following updates for our oscommerce website. 1) [login to view URL] a) Update the AIM to store the transaction id on the web front-end b) Add an option in the admin->orders page to manually authorize, void or capture the payment from admin order details page for the current order total. c) Script to process all authorizations for all orders in void and/or capture depending on the order status; do this with 24 hour lag in a script - will be running this as a cron - Update the order history as each transaction is processed - save the processing log as a report so that we can trace if there was any issue. 1.5) Add ability in admin->order_details to update the order total for the order 2) Store all transaction id for all payment methods and every transaction. Show the transactions related to the the order in order details page. For AIM, WPP and PayPal 3) Implement PayPal IPN and PayPal Express - Store the PayPal transaction number Terms: 1) Please include the term "dfsadfas9009e3" in your message/post so that i know you are a serious bidder and it is not a blind bid. 2) I do not intend to make upfront payment; I'll be happy to make milestone payments 3) I expect a senior developer performing this tasks; you should not bid if you plan to put a junior programmer (less then 5 yrs of experience) on this.