Kayak La Jolla Sea Caves

Visiting San Diego for a few days…?
Hi there! My boyfriend and i are visiting San Diego for a few days. Does anybody have any suggestions for a good hotel? We’re hoping to surf everyday and also do the kayaking at the La Jolla sea caves, do the old town trolley tour, etc…
Does anybody have a suggestion for a good hotel (hopefully no more than $100 a night) in a decent location for our planned activities?
Also, if anybody has a suggestion for something we should see/do, that will also be much appreciated.
Things to see
Zoo or Wild Animal park (I prefer wild animal park and do the journey into africa)
Go into the seaport village and check out the pirate ships. Other oceanliners and aircraft carriers might be in port.
Take a ferry ride to Coronado. They have some pretty fun shopping there.
Eat Mexican food and tour Old Town SD
Maybe see a Padres game (ride the trolley this and old town)
You can even take the 30-40 min drive (or take the train, Coaster) down to my town, Oceanside. Where you can walk the longest pier in SD County (if not the longest in all CA). Shop and eat at our Harbor (Cape Codd Village). You can also play in the best beaches in SD county (in my opinion). Walk on our jetties and walk or cruise our strand. Have a blast