I don't think we should take ConLaw as 1Ls (which ConLaw would it be, anyway?).
In any case, as for the clinic prereq issue: talk to the clinic director in question (if you really do have a good shot at getting into the clinic). I'm in a clinic right now despite not having one of the prereqs because the director was willing to waive the requirement. Although, if I'm guessing right, you probably do want to take CrimPro I with McAdams over ConLaw III with Stone.