Re: Kirk's early years.
For some reason I think we will see Gary Mitchell in the film.
I think Gary is a more likely candidate to be Cupcake, since AFAIK Cupcake isn't Irish (at least his accent isn't) so he can't be Finnegan.
It is by caffeine alone I set my mind in motion. It is by the beans of Java that thoughts acquire speed, the hands acquire shakes, the shakes become a warning. It is by caffeine alone I set my mind in motion.