Plan costs
Naturally, if you want to put your plan into action, you should be ready to cover all associated costs. You must have enough money to pay salaries, bills, utilities, rent, taxes, and make other big and small payments.
Since you have already estimated how many team members you need and how long it will take you to complete the project, you can calculate the total cost of software development. List all the prospective expenses and calculate the total sum.
If you see that the sum exceeds the return you expect to get, you should revisit your project plan. You must find a way to cut some expenses and minimize the total costs. Otherwise, your project will bring you loss, not profit.