Bruce
Thanks for the tips, Dion! Tip Nr. 2. How many stars your staff should have at least to add value to the team?
The CD and TD are for your research. If you don't need to research a lot after each race just keep them as low as possible. But if you want to reach the top you should get them as high as possible.
But if you are running low on cash invest in your team by cutting in it and trying to keep up with the sub top of the league. That way you earn money, coins and getting in the green numbers again.
For myself, I still have like 48 mil. Because I manage my finances really carefully.