Therefore, the ROI is simply the ($6.5M) less that budget request ($2M), or $4.5M.

Awesome post. One could look at this as to a multiple rounds of raising money. Here, John is raising a seed of 2M at a 4.5M pre and 6.5M post money val. Each subsequent circle could be a valuation at next round ( or proxy, at least).

Would you be willing to share some insights into what methodology you are using to calculate the numbers in the model?