Thanks, everyone. I'm getting some pointers from a renowned local photographer in a few weeks (by pure luck he lives nearby) and was kind of nervous about that--so I wanted some feedback first, I guess, since I'm still shooting and deciding what to show him. These are my best shots but I feel like 6x7 isn't giving a very "expansive" feel even with wide lenses, but it may be because the leading lines don't really pull you into the background, except in maybe the first shot.
Most of the shots are from eastern MA, the better ones from a trip to Martha's Vineyard, which is a nice place to shoot because the sun rises and sets over the water and there are cliffs by the ocean. The rest of the state is difficult this time of year, though; there are no long plains or big mountains--it's all low hills and evergreen forests, hard to get a good sunset or find a foreground that's not dark green and prone to underexposure.
Btw, I agree 35mm slide film has about as much resolution as a digital slr has, but the grain structure in color film is pretty pronounced compared with digital or medium format, which makes photoshop work harder with 35mm film and I like to do dodging and burning.