I mentor startups in the product management process so they can make better decisions.

Quite frankly, you are asking the wrong questions. What accounting problem are you going to solve for startups? Without knowing this and verifying it with people that would be potential customers, you can't possibly know whether or not your vision of the solution will work.

I will go one step further and warn you that feedback you get on here about whether or not it will work should be taken with a grain of salt. Always beware of second hand customer validation information. If you need some help getting first hand information, I expect that I can help point you in the right direction.

Cheers and good luck!