Maybe I'll just finance it then sell it after. Probably easier to do it that way and make couple of extra bucks.
I would really (really really) examine whether you will actually "make a couple extra bucks" on such a transaction right now. In normal cases, no one makes money buying a brand new car and flipping it unless its super in demand and not available.
That existed earlier this year for model 3s and Ys but basically doesnt exist the same now. I would be very surprised if there is any chance at all at you buying the car, paying CA taxes, waiting the 4-8 weeks its going to take for title transfer, etc, then selling it and actually even breaking even, let alone "making a few bucks".