Rick, no problem enlarging T-Max 100 to that size, especially with medium format.(posted 8617 days ago)I don't think it is so much a question of what film to use - for technical reasons - as what film to use for aesthetic reasons. It really depends on what look you like, and what look will suit the subject. Since you say you have not enlarged T-Max 100, you won't know till you do.
Under your circumstances, I would shoot Ilford XP-2 Super @ 320.
chris