Build Odoo 12 module for real estate

I need odoo champion to build odoo module for real estate management .
Reports number :20
Module will contains :
Listing
Grouping
Contract management
Ownership management
Release
Resale
Renting
Maintenance
Sales targets
Commissions management.
Resellers management.
Installments management .
Checks management
Collections management.
Payment receipt
Integration with odoo accounting and all modules .
Regards