In the current Contracts game on GridRival, you are allocated 100,000,000 in fantasy budget to start the season. This budget may be used to sign 5 drivers/riders and one constructor.
You MAY elect to use your budget to sign fewer drivers at a higher price point, however, you will not be eligible to utilize a "Talent Driver" if you do not completely fill out your roster. Talent Drivers earn double points at each event so a team that chooses not to utilize one will likely be at a significant disadvantage.