I'm looking for some recommendations for a trip with my 15 year old son in a couple weeks (early Oct). Most likely we'd leave San Diego Thursday afternoon, hike Friday-Sun, leaving for home late Sunday afternoon. Don't want to spend more time in the car than necessary; thinking about something off the 395 versus through the Central Valley but open to recommendations. Looking at maps coming into Whitney Portal might make sense?
We're both decently fit, and have been backpacking before but never in the Sierras. Our ideal first trip wouldn't be anything tremendously strenuous; hiking not climbing, ideally a nice loop with some high altitude lakes and meadows, forests, no bugs, not many people, perfect weather, etc

He spent a few weeks in Switzerland this past summer so might be disappointed that there are no restaurants to hike to!
Ideas welcome! Also happy to take recs on guidebooks/maps/etc. to help in planning. Thanks!