Your only large concern is the locating of the bikes you want. I have an honest friend that specializes in used bikes. PM me and I will hook you up.
Pretty much forget dealers. Overpriced and not much dual-sport available...especially in LA. LA is sport-bike country.
Insurance.....Geico, alllstate, shop the net.
My brother has a mobile bike repair and dyno in LA, I'll check with him.
PM if you want contact info......
You might try being a bit more flexible in bike choice. Think about KLR's...very popular in California. Check out a few US KLR sights. You'll be surprised what you might find......Luck, Bill
Rule#2 "Never go ANYWHERE that YOU are considered a source of FOOD!