Hey Arpit! Interesting scenario to consider. A few thoughts I have: Losing $4k a month feels pretty high, especially if you wouldn't be moving back for a couple more years. That could be almost $100k that you could have saved for your next investment. Of course, you'd be building equity in a property during that time, so it's just a matter of how important liquidity is to you right now. Can you afford the $4k a month? Would you be able to afford potential vacancies at the California property? Considering that you're currently out of state you would also need to consider finding a good management company who would be able to find strong tenants and keep it occupied.
I understand the FOMO. Prices are down here in the Bay, but it's hard to tell how long that will last. At the same time, it seems like Option 2 would allow you to build up more capital over the next couple years while also building equity in the Knoxville properties. I would lean towards Option 2 personally.