I suppose I shouldn't even post here, because I don't know the answer to your question, but I'll tell you what I did in S and D. I was so frustrated by the huge wisdom square, huge campus, and THEN huge buildings (3 different kinds) that were needed to even do anything, that I just got sick of the whole chapter. I just built one of each of the three buildings and then kept making the goods to expand the campus to level 4. Once the campus was expanded as much as it could, I sold the three buildings and just used PPs for all of the research for the rest of the chapter. I never even completed those quests to build two of each building, get so many guest race supplies, etc. I powered my way through the chapter and got to halflings as quickly as possible. Now, I'm just taking a breather in halflings and not worrying about progress.
At any case, I wanted to wish you good luck with the chapter.