Went for a spin last night with Brian to test out the new lights; looks solid to me for the most part. Rough roads definitely induce a bit of a strobing effect with the LED, probably because it's mounted on a Terracycle accessory mount well off the front of the boom.
I may need to think about moving the primary LED down to the fork, and leave the E6 halogen mounted on the boom; that would give me a bit more light on the tighter turns.
Lost one of the bolts on the left water bottle cage; luckily, the other one held, so I transferred bottle to right cage and tightened the heck out of the single remaining left bolt. Memo to self: Loctite the crap out of everything.
I still need to get the tail lights and the cycle computer tightened down as well, as they still tend to rotate fairly freely with enough vibration.
On the bright side, I threw some Koolstop Salmon pads on the front brakes; that, plus some heavy toe-in, and the worst of the squealing has stopped.