Another Altitude question

The difference between sea level and 4000 feet is not really that bad. I think you could go there and race right now. You'd feel it, but it would not make a big difference.
I live at about 300 feet elevation and routinely go into the nearby mountains and race at altitudes from 4000 to 8000 feet.
Los Alamos, at over 7000 feet, will take some adjustment. But altitude is one of those things for which everyone is different.
I think you should leave your training plan the same for now, then see how you feel. There may just be a few hard days that you have to cut yourself some slack because you're adjusting. Or you may have to rewrite the whole plan.
I don't think you can know what will be necessary based on any formula.
But I could be wrong on that.

Oh gee, I didn't realize how high Los Alamos was... I'm contracted in a town 15 miles awa thats at 5500 feet....well I'll be making some RBCS for sure. I could actually try something like the live high train low! I think you are right that most formulas sort of only tell you half the story...the other half is how you do once you get there...

A day per 1000 feet seems excessive. Western States 100 literature suggests a 3 day period to acclimate to altitude. Have you had issues at altitude before? Don't psych yourself out! I wouldn't worry about it, just go run, and then IF you feel effects, stop, or slow down.

I have to say I've never done a race at higher altitude, and it's a bit of a concern for me too, as I'm targetting WS100 2009. I'll be in Reno over Christmas and trying to get some long runs in then to see. I'm hoping my other hobby of jumping out of airplanes is enough conditioning for my body :) If you're going to be living at altitude take full advantage of it. You know they sell altitude chambers for mega bucks to athletes just to simulate it! Not just because they might race at altitude, but probably because your body will become more efficient at using the oxygen available. So take advantage of your 3 months!