The Core itself is what sucks, not the body. That won't be the issue. You'd be better off with the Fullsized unit, especially with that phenolic body, best of both worlds. Hell, since you make em anyway, theres really no excuse not to run a Full Sized! Just run a Fullsized unit and thank me later for guiding you in the right direction.
BTW, how much do you sell those Phenolic Full Size cores for?