I want to add Fermilab as a quality physics channel as well, easy to follow and Don Lincoln is entertaining to listen to.

I think ‘balancing your checkbook’ nowadays means making financially sound decisions, not literally sitting there with an actual checkbook. I might be wrong though, I’m not a native English speaker.

Nevermind, I was wrong.

I’d go for single mode, since it’s usually the same price, if not cheaper. You’ll probably need a fiber splicing machine (and a couple or four splice protectors, depending if you use single fiber or duplex) and a splice box on both ends.