Yep. Lot of history to take in. But to be fair, that just gives me as a player a good reason for why my character would know a lot about those events.
I quickly discarded the idea of having grown up in Los Angeles simply because of all the stuff that's taken place there over the years.
Las Vegas seems like much more of a safe bet in that it's only gone through a couple of major historical events, and the transition from USA to Ute and Ute to PCC seem to be the biggest.
Everything else I feel like is something that can easily be explained away, or never be touched upon by the GM. Alternatively, having a (human, in my case) character who actually lived through some of the majors could provide some interesting roleplaying leads, essentially edjumacating the young'ins in the way of the land.
My biggest issue in terms of backstory was figuring out why anyone would have a Horizon corporate SIN; however, that was easily explained when reading Corporate Guide, seeing as how all subsidiaries AND direct Horizon employees qualify for corporate SIN status, somewhat of an oddity amongst the Big Ten.
Reviewing Twilight Horizon, I'm finding a lot of useful stuff here, so thanks again for that. Now to read up on Pueblo and Ute, and figure out why someone in Las Vegas would know the Wildcat martial art style without being a Sioux Wildcat themselves.