Grain is not an issue for large format unless you are making mural- sized prints. I always use 400-speed film, and I cannot see the grain, even under a loupe.

Any B&W film will work fine in T-Max developer. I don't like it, though. It costs too much, but is nothing special. You need a fast film, even in bright light, to stop the motion of trees. I like HP-5+. You could try this film in Rodinal or HC-110, to get the sharp-edged effect you like.