Money Help Money between all members give and take

I need some one can build script Money Help Money between all members give and take. 1. Secure from sql injection 2. Registration by refferals and can custom later 3. Validation email 4. Login and help another member needs money 5. First group users help another members, will gain wallet virtual money and will be increasing every week 10-15% can be setting through admin 6. After 15 or 30days, first members group can get help, and another new members or old members want to give help will be automatically system calculation to help, admin can settings the cron and configuration. 7. Calculation minimum counting every $10 usd 8. Payment gateway through paypal and upload payment through bank transfer 9. ewallet will show future money if members saving without withdraw administrator : 1. create add/edit/ban/delete 2. active and non active users 3. create category for users group and 4. setup fee for refferals level 1,2,3,4,5,etc 5. report transaction for groups, users, etc 6. support tickets members to administrator More than this please improve more, bonus for your improvement made this perfect Payment will be done after I received your files and working, all payment through milestone payment