Mike, thanks for your comments.
I should add, my plan is to shoot color negative, with an eye towards scanning the negatives and turning some of them into black and white shots. C41 process is easier to find when traveling and it gives more options.
As an example, is a Ricoh Diacord in good mechanical shape, a good one to get? Most photos will be landscape or out of doors, so maximum aperture of even f4, is OK (the 2 most common I see are 2.8 and 3.5, with the 2.8 usually going for a lot more).