Hola senor/senora! :) It's Tom Kuegler here. I created the 30-Day Sprint that Anthony joined me on in October. :)
To answer your question, I think that you might be surprised with how much these folks would be interested in where you are now.
I've had friends from high school come back and comment on my content about building online businesses, for instance. I say you actually have a pretty good shot to gain traction with them.
If you don't, I can always offer a refund to you no matter how far you are into the sprint. Normally I have a 7-day refund policy after the sprint starts, but for you since this is a specific concern, I will allow that refund offer to stand for the entire 30 days.
If you want to sign up for the next one, here's the link to do so: https://www.30daysocialmediasprint.com/linkedin-sprint-2
If you have any questions, just let me know via email (tom@findingtom.com). :) Just followed you!