Aine, if I am to be blunt (and I think at this stage of a thesis it is best to be ruthless, and not to dwell on one option for too long) I find the "architecture and nourishment" and the food marked a little contrived, and I don't see where a public theatre comes into that, though if like in your second suggestion, for the cookery school, the theatre becomes apart of the school facilities, then maybe. The translation from "noruishment" to food market is perhaps litteral, I'm not suggesting to throw it out by any means, but I think it need another level. The first precedent that comes to mind is Miralles markets in Barcelona, I'm sure you are familiar with the roof of the markets themselves, but the markets were part of a wider brief including apartments. For me, it would be difficult to discuss (at least my interpertation of it) "nourishment" without considering dwelling, the home, the everyday nourishment, if we call it that. I like the idea, that they would be linked then as in the Miralles scheme. The markets are a quiet literal interpertaion of "nourishment", which for a thesis, can infact be a good thing, the brief is, after all, only a means of developing and demonstrating an idea.