I’m not the best person to reply to this subject, as I only dive SD area a couple times a year, but I’ll try to help. From my experience the best way to access the Pt. Loma Kelp beds are on any one of the local dive boats. It’s avery short hop from Mission Bay so it keeps the costs very affordable. Here is a link to all the California dive boats listed by city: http://californiadiveboats.com/ Some of the boats don’t have their June schedules up. But if you do one of these trips the Divemaster will easily match you up with a buddy. If a shore dive is more your speeed, try La Jolla Cove or La Jolla Shores, but please find a buddy.
If you strike out finding a buddy for a shore dive that weekend in SD, and don’t mind an hour and a half drive up North to the Laguna Beach area, I always know at least 10 people who will be diving there.
Good luck and Happy Birthday!
Rich