My bad for the poor wording! Even if a work has a very strong outline, we wouldn't take it on unless it has at least ~80k words ready to go.
~80k words is indeed the point at which a series is considered viable for premium serialization!
Followings on other sites are taken into account! Which is why it helps us out to have relevant links included in the pitch.
Also, there's no minimum novel subscriber count, but a high subscriber count would be a definite plus. We changed this so that writers from off-site who might not have any following on Tapas feel welcome to pitch!
Early Access is a feature I'd love to roll out to novelists but there's some technical and logistical obstacles that make it infeasible for large scale implementation. Hopefully that changes in the future!
You're more than welcome to send in a pitch for the entire series, which we would consider based on what is currently published. If you wanted we could also consider just the first volume for serialization. In your pitch you're more than welcome to request the sort of publishing arrangement you're looking for!