For that price, you could probably do some beach towns west of the 5. Search Zillow for Carlsbad, Encinitas, Pacific Beach (92109) etc. Problem is acreage — you likely won’t get it for the price in areas that aren’t awful. And Pacific Beach isn’t seen as very kid-friendly by people on here.
Where are you and your husband going to work in SD? Commute should be a consideration as well.