A couple weeks ago I mobbed from well north of Santa Barbara to south San Diego at 100mph, give or take a few mph going through L.A. I was fully impressed. Bike did well.
I rode from North Bay California to Mexico also. I got the 103 stage 1. Id say that lane splitting and cold weather are not ideal. You kind of have to get use to the ride. Each trip gets easier. Ultimately, I'd give the road glide the nod for going outta state. There's something about the SG that doesn't resonate well with me personally. I tend to like the shorter commute distances more than the multi-day excursions.