Create a WordPress Template

i need a wordpress buying cooperative custom code like the template you find at smartecart(dot)com. It will go in our subdirectory. If you think it is easier to install smartecart and then try to integrate this cms with our cms and paypal multipay api and emails, then let us know if that will save time and costs. Here is how it works: Step 1: Buying leader creates event (title: Let's work together to buy bulk designer shoes!). Step 2: Then, buying leader sets conditions (example: only 10 people allowed, must pay $100 plus flat fee for shipping NOW no reservations allowed, and if under 10 people or if date is December 17 then cancel event and refund everyone). Step 3: If a buyer wants to send money to buying leader in order to join the buying cooperative, then use Paypal Multipay api to allow users to send money to Buying leader via Escrow. (We have this code working well in our site). This locks in buyer and notifies buying leader of commitments to deal, but only system can auto- release payments if conditions are ALL met. Always require buyers and buying leader to type in names to certify they read terms and conditions in order to use Escrow. Step 4: If all conditions are met, process purchase and send invoices. Must have: Always send email messages when events happen (like a new payment or refund on its way). Allow people browsing to see quick info before they click on link to read more about buying event: like "Timer" countdown, number of buyers, reputation of buying leader, buying leader avatar, ended or cancelled, bookmark, 100 character description. Allow bookmarking, which triggers same event emails but does not show personal info and does not mean person must buy. Integrate invoices and pay history and messages into custom site CMS. Integrate into our dispute resolution theme. Allow buying leader to release buyer from their payment (like cancel a milestone feature on this site) Use child themes and hooks only. Do not allow code to harvest user info-- balance max privacy with max security as much as possible.