I fly in Northern San Diego County.
http://palomarrcflyers.org
There are several clubs and fields in the area. You will have no trouble finding free instruction. there are SEVERAL fields in the area you described, (it's thousands of square miles), and lots of driving.
Where are you staying? Come out as a guest, or contact one of the club oficers and set-up a lesson. First one's free....hehehehe
Good Luck with your solo.