What you should look for is early to late 80's Japanese bike.
Brands like Nishiki, Univega, Bridgestone, centurion, panasonic. Most will have eyelets for racks. Wheels will be 27 (more limited tire selection) or 700.
you get a strong, simple (friction shifters) drop bar bike.
you don't need 26 wheels unless you are carrying huge loads.
you can attach a rack without eyelets. one trick is to attache the bottom of the rack to the triangle hole in the rear drop out.....will post a pic later
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Life is too short not to ride the best bike you have, as much as you can
(looking for Torpado Super light frame/fork or for Raleigh International frame fork 58cm)