Wow, you have had some bad luck with bikes recently. They're all great builds. Regarding the 3 speed with brifters, how did it work? I've though that a S/A 3 speed would be the way to go instead of a SS build. Just a little lower for the hills, just a little higher for the descents. I love the clean look of a fixie or SS.
Glad the bikes are the only things being harmed in your accidents!