Wanting to take a LONG Cross Country - Ft. Worth to San Diego... advice?

Received my instrument rating about a year ago, but I haven't managed
to rack up alot of flight hours since then (Im just shy of 200 hours).
I think I've just become bored with flying around the same area all
the time, and I'm really wanting to do something different and
challenging. Plus it would help me to build up the hours I need
before I start the commercial.

So I'm considering making a flight from my home base in Ft. Worth
(KFTW) out to San Diego. I've got a friend that lives out there so it
would be a good excuse to go - plus the fact I think the change of
scenery and the experience itself would definitely be worth it.

I'd be flying a 1978 C-172 that cruises at about 110 KIAS. So I'm
figuring about 10-11 hours travel time each way.

I'm looking to hear from others who have made trips like this and what
advice you might have and/or pitfalls to watch for. Any
recommendations on some cool places to stop or ideas on the best way
to break up the flight segments?