Originally Posted by
Lascauxcaveman
You really don't need a tensioner, as long as you have chainbreaker and know how to use it, and have horizontal dropouts. An 80's Univega droput? Lots of leeway there.
Going fixed is super easy, as long as you understand the difference between a 1/8" cog and a 3/32" cog, which I'm very confident you do. And have a chain dedicated to whichever one you choose.
Like everybody else, I recommend a front brake first, then add a rear if you feel you need it, which you probably won't. Since you're in relatively flat Central Washington, I think a fixie would be a great addition to your stable.
Just to clarify - I was referencing chain tug, not tensioner (ala singleator) :-) On some builds with QRs I add them as additional safety measure. I have quite a few builds where I use ISO disc cog on MTB hubs and most of them come with QR. While I never had properly closed quality QR slip on me - just adds piece of mind.