Welcome to the forum. I have a couple of suggestions.
First take a look at this link for a list of apples that do well in hot climates like California. The apple list is based on the nursery’s owner’s experiences in Riverside, California and also his experiences in growing apples in the tropics (Africa). In addition, look at the “failures” list at the bottom of the page some of these apples like Enterprise are good but no longer offered because of issues that won’t effect you.
This link is to a thread discussing growing apples in California.
Second for most apples you need two apple trees for successful pollination. If you have one tree you may not get any fruit. Plus some apples are triploids and pollen sterile so they cannot pollinate other apple trees. Other trees are partially self-fertile but I would in most cases plan on a minimum of two trees.
Third, what kind of apples do you like to eat either their variety names or characteristics. Do you like sweet, tart, sweet-tart, or some other apple flavor like licorice? We can do a better job of recommending apples if we have some idea of what flavors you like since apple flavor varies widely.
Fourth, if you want a tree that will grow above the deer browse line you probably want trees on a more vigorous rootstock like MM111.