In a reply to the Rev. Bruce Buchanan I have apologised for apparently thrusting the baptism issue to the fore. That wasn't my intention, I was just seeking to make clear which of the positions I was talking about.
Sorry if I gave the impression you were doing this; I was just speaking in general; I don't see it is in your posts.
I agree by the way that covenant theology is first and foremost soteriological. That is my interest too. I am working on PhD in which I am trying to bring N.T. Wright's covenantal context for justification and the various "Reformed" (in a broad sense of the term) covenant theologies, into conversation with the author of Luke-Acts. (i.e. test them against that portion of Scripture.)
That looks like it will be a very fruitful field of study. I hope it goes well for you.