I would recommend XT (Mountain bike) hubs instead of ultegra for 2 reason: the rear dropout on the LHT is 135 mm, but Ultegra (& other road hubs) have a 130mm spacing. This doesn't make a huge difference in the end, you can actually fit the road hubs, the real reason to get XT is they have mud guards to keep wear & tear down on the hub bearings. They will be better for rainy/muddy/sandy conditions, which I imagine you'll have at some point on your commute.

Otherwise I think you're on the right track, the LHT is my main commuter, and I'm actually planning on buyin gthe performance websites A719 wheelset, which, stupidly, have 105 hubs. SO I'll deal with the road hubs for now and eventually buy some XT hubs to lace to the rims. I'm just doing it to save money really, it might be worth your while to check out as well. There's little difference between Ultegra & 105, what you'd be paying for (and it IS worth it if you're not comfortable truing/checking the wheelset) is the Harris build.

Anyway, the link for that wheelset is: