Actually, Intoxicated, you are really on the right track: San Diego has been a 2-antenna market for quite some time, as the major VHF and UHF transmitters lie in different directions, about 45 degrees apart at your location. When using a deep-fringe antenna like an HD-7698P, the beamwidth of that antenna is narrow enough that you will compromise your reception on both VHF and UHF by choosing one antenna to do everything.
The Winegard YA-1713 or the very similar AntennaCraft Y-10-7-13 should be aimed at 190 degrees by your compass, and your UHF antenna should be aimed at 165 degrees. Your UHF stations are all line-of-sight at about 35 miles, and the beamwidth of a 4-bay antenna will allow you to see all the desired UHF stations. I believe that a small 4-bay UHF antenna like a Channel Master 4221 HD, a Winegard HD-4400, or an AntennasDirect DB4 should do the trick for you.
Combine the signals from the 2 antennas using a Pico-Macom UVSJ, and run the cable to the TV set or splitter/amplifier if you have multiple TV sets. You will not need a rotator with this setup, and channels 8 and 10 will come in just fine, as will your various UHF stations. Here's a good installation guide to help you out:
http://manuals.solidsignal.com/AntInstallGuide.pdf