Your pension comes to $32,400 which leaves you with an annual shortfall of $17,600. This means, in theory, $440,000 should be your goal (25x the expenses not covered by your pension). As such, you have the basic math covered.
The real question is how confident you are in your expenses. I agree that $50k can make a comfortable life in San Diego (hi, neighbor!). The question is, does it account for your expenses, in retirement.
Is your pension COLA adjusted?
You mention a medical pension, is that enough to cover your insurance or do you have retiree insurance?
Does $50k allow for things like replacing the car?
Have you considered taxes?
What will your retirement life look like? If you want to travel more, have you allowed for that in your expenses?