You should be fine with that amount of time depending on what time of day you are traveling. Just remember that it may take twice as long to drive between SF and SJ if you are doing it between 5 AM and 10 AM or 3 PM and 8 PM on a weekday.

I didn’t travel to SF very often when I lived there, but I’ll bet they have some of the best sushi places in the country. Though I don’t know specifics, so you might need to do some googling to find the best ones. Near the SAP center, Sushi Confidential isn’t bad. It’s walkable from the SAP center, actually. Before I lived walking distance to the SAP center, I would park at San Pedro Square for like $7 and walk over. San Pedro Square has tons of options for local bars and food, and they’re all pretty darn good.

If I had to recommend a pizza place that’s pretty popular in that area that I like, it would be Pizza Guys. Most people really like Pizza My Heart, but I think they’re kinda average. Though I don’t think pizza in that area is too spectacular.

What is spectacular in that area are the burritos. Unlike in Austin where burritos are typically covered in sauce and eaten with a fork and knife, in California they are always served in aluminum foil, and you unwrap them as you eat them. Iguanas and La Victoria’s are the two most popular ones, and you’ll see people argue about which is better (I prefer iguanas!). Metro Balderas is my favorite burrito in San Jose, but only at the taco truck near Race Street. The restaurant isn’t as good.

Hopefully that helps a little!