Wpgroupon WordPress work

I have a client who has a wordpress groupon script installed and they need some edits made to the script MERCHANTS 1. the back office existing on the site is for MERCHANTS. Can we add an accounting section. It shows what deals are being run, can we add something that tells them how much money they will receive after someone makes a purchase. 3, Can we put a FEILD which will code for a sales rep. CUSTOMER PAGE 1. Need a customer page so we can capture their email address with a back office for the customer. It would tell them the deals they purchased 2. Can a page be set up to email out deals using the data base of email captured? 3. Payment capture (integrate paypal) Also there are some changes that need to be made to the home page will give the site to people I deem viable candidates