Sales Calculations using up to 10 Variables

Hey there,

Hoping for some help with this sales projections calculator. I am looking to make calculations in column F based on numerous variables I choose to add or not add to column D.

For example, if I update cell D8 to $20,000,000.00 and change no other cells in column D, I would like all the formulas in column F to update based on this new variable only. However, if I choose to update cell D8 to $20,000,000.00 AND change cell D11 to 45.0% I would like all the formulas in column F to update once again based on these two variables.

Is it possible to write a formula with this many variables without having circular references?

Thank you in advance for any insight provided.

Cheers,

Dan