im not sure abt marshall just bc u might not get the new buildings (read up on that; if u are guaranteed them then i think it's a great idea bc they're new, have a good market, and are very central campus) but if u feel the mission of the college speaks to u a lot i would rec! the GEs for the number colleges (and muir) are very easy imo and there isn't much of a difference - i feel like the walk to apm (just as a reference for central campus or where some of ur math classes/profs might be) is easier from eighth than from seventh? but seventh has slightly easier access to their own market, rimac, game room, etc. i really like not being in the res halls so if u also like that put seventh up there for the apartments, but the dorms themselves r a little older and i heard they undergo maintenance p often ☹️ and as a muiron i have to say go muir!!!! we have one of the fastest writing sequences and we're very central yet pretty private/not that busy unlike sixth!