If it’s your forever home, in a sense it doesn’t matter if prices drop. As long as you are happy in the home and the amount you pay (considering both down payment and monthly payments) is within reason, the market price isn’t that big a deal in theory. There’s a question of whether you could have gotten more, but as you observed, that’s not such a straightforward question.
But if you are worried about home prices dropping, and/or you believe (correctly in my view) that home prices are high, why keep the condo? If you buy an 800k house and keep the condo, you have an awful lot of exposure to SD real estate, for better or worse.
