If you are a startup it is quite weird to put investor money into the pockets of employees. Why don't you fund them with your own money or another cashflow? I am not interested in investing in an ICO of which 3% directly flows into the pockets of employees.

Also, transparent and honest ICOs and other companies that want to raise money DO include calculations. If you, as you said, have 'proper manner' for calculations than I guess it is no harm to share them. You are talking about money from the investor in your ICO, they should have the right to know what you do with their money.

Another question you did not answer before; why do you need 6% of your tokens for marketing if you already keep 15% of the funds? And 15% is really a lot already. Could you elaborate a bit why you ned 15%? What's your plan? What are you going to spend it on?