I believe SF to Orlando is about 2500 miles so would be only 4 trips for you. The pass doesn’t start until May 2023 so you have until then to hit 20k. Just keep any eye out for promotions. Some cross country flights can he bought for as low as $50 round trip and sometimes Frontier does multiplier 2-5 X qualifying elite miles. If you are able to jump on those deals, definitely worth going to 20k status for the seating and carry on benefits.