1. Technical shares accounting for 40% is already very high, and generally does not exceed 30%.
2. It can be discussed by just a few of you shareholders without professional evaluation. This is also in compliance with legal regulations.
3. The investment amount and profit distribution principle should be determined in the agreement. If you account for 40%, the profit should also be 40%. You can discuss other specific details. When you invest in a company and start a company, you also need to prepare shareholders' articles of association, which contain the investment quota and profit distribution.