California is a great place to fly. You can chose between heavy traffic get-your-fix-talking-on-the-radio around the LA/San Diego/San Francisco areas, or you can choose to go into the desert, or mountains and not speak to a soul. It's much more varied than Florida. And the weather is better.
Nevada and Arizona is even more barren and you can fly for hours without seeing a single soul.
I actually think 100hrs is the perfect time to do a long x-country. You know enough not to kill yourself by then, or at least you should. It's very easy to stay close to the familiar, going places where one went with the instructor and not have to make decisions by yourself - you build no new skill. As long as you're conservative, have your head screwed on right, then weather, unknown airfields and all the other stuff is great to experience.
Last edited by AdamFrisch; 25th January 2013 at 16:53.