Help Choosing Between Ideas

Feeling big dilemma of where to put my focus. I'd like your opinion on what I ought to pursue.

Idea 1:
B2C. 1-2x annual small transaction % of High AOV. I have a dev friend willing to build out an idea that I first built a noCode MVP for, and demonstrated a little bit of traction — however, it doesn't solve a need that is "hair on fire", nor is the need frequent. BUT it does have a built-in virality aspect (insofar that like dropbox, a user involves others in a collaborative crowd-source sense).

Idea 2:
B2C. small transaction % of low (yet more frequent) AOV. I have a team of students learning how to code, who are building an MVP for this (at no charge). No proven demand, yet could be quite disruptive. Large TAM

Idea 3:
B2B. a "me too idea" with sleight unique differentiation from already large/funded competition, however, huge TAM. Monthly / Annual subscription. No proof of traction, but I feel churn would likely be low. I'm guessing longer sales cycle given it's B2B. Will be much slower to get a product to market which I can test & sell.

I have no first-hand domain knowledge in any of these, though I don't forsee that as too much of a barrier.