The creation of a website of football predictions

Good day.
You need to create a website of football predictions.
Analogy: betonsuccess.ru
That should be:
1) a registered user should be able to buy and sell predictions;
2) when you buy your prediction:
- the forecast amount is deducted from the user's wallet, which must have been previously replenished;
- if the forecast was not good, the money for this forecast are returned to the purse of the buyer.
3) when selling forecast:
- create personal profile-stats seller (the history of the rates, win rates, revenue, etc.);
- a portion of the sales forecast out of the site, part of the Sumy receives by the seller.
4) General statistics of all predictors

Waiting for offers and prices.