Looking for advice: Building a marketing plan recommendation app

Hi all, I operate a marketing agency and only know how to do basic WordPress websites. Looking if anyone can help brainstorm to create the following archetype, or if it's even possible.

1. Business enters in several data points IE industry, location, ideal customer
2. Software extrapolates data in to Facebook or Google API to access demographic and target market information (Is this possible?). If not possible, we would purchase the data and manually enter it, as a proof of concept, available only in certain regions to start.
3. Based on the platforms (we would try getting as granular as data allows) that the company's target market spends their attention, we would churn out a marketing plan. Basic codes of – If X audience > 1000 on Y platform, then A amount of posts should be posted per week and B amount of marketing dollars would be spent on this platform.

Monetization would be freemium to start, in theory taking a percentage or flat rate from action taken based on the plan, on partner ad platforms.

Does something like this exist? Is it at all possible? Do API's allow this?

TIA for all help or advice?