saiine, residents of 91910 (Chula Vista) DO work in KM. I would advise leaving before 7:00 am and taking I-5 to SR-163 north (in dtn SD) as opposed to I-805. It tends to be about 10-15 mins shorter. There are several houses on large lots in your price range but they will most likely need work and are expandable. In your price range, the typical lot size will be 6,000-14,000 and the age will be 49-78 years old in this area.

I don’t think 91911 (Chula Vista) (in your price range) is a good investment unless it will be a rental.