If I had to hazard a guess, I would say that by issue 14, The terrific will finish it's foundations. It'll probably have established Doc Dread has a dangerous opponent, possibly recurring, hopefully with his Dreadfuls. The next two issues will probably have a lot of strong moment.
The test will come in April : where does the team goes once it has truly become a team and succeeded as such for the first time ? What will they set out to do ?
I think that the strongest point of the Terrifics (and to a lesser degree, The Silencer because it has drifted a little from it for the moment) is the moments where the characters deals with relatively mundane problems : widowing, estrangement from one's family, etc. It allows for more complex characters and potential story arcs, IMHO.