I'm looking at a mid 80's road bike with typical 27" wheels, downtube shifters and high end but obsolete Suntour drivetrain. What kind of trouble can I expect in trying to use this as a commuter? Some concerns I have:
1. Can I find fenders that will fit OK for a 27" wheel? Would 700c fenders fit?
2. Ditto the rack.
3. And if I do break something, is there any chance of getting a replacement part with any ease? I don't want to be scanning e-bay for 6 months every time I need a part.

I owned a nice mid-80's bike in the mid 80's and I remember it fondly. I just wonder if trying to run such an older bike now would give me hassles.