First off, to echo Ed's post, daylight savings time is the best thing since sliced bread. What a difference that made, I too couldn't have imagined doing that workout indoors.
Hit 253 and 251 watts for my 20 min intervals, pretty happy with that, felt comfortable (as much as you can be) during the efforts. I was definitely playing around with gearing and where to hold the handlebars during climbs. I was also trying to catch my shadow from the side to see how aero I was. All in all, it was a good ride and I look forward to riding outdoors from now on.
Dismal Dash... what kind of course is that? In terms of elevation, is it all dead flat? I know it is out and back but what are the other little details about it. Normally windy? It looks like the temps are only going to be low 50s, which isn't terrible but I'll have to think about clothing options carefully.