Spice Table on the bottom, Red Med on top. The other 2 are literally stacked on top of each other so... stack them as you wish.
Do Sotto close to restaurant opening time, sit at the bar where they serve the full menu, you'll be in and out in 45 minutes if you wish, no need for even a reservation.
I have been to Picca and Sotto. Plan to hit Spice Table next week. Reservations at both Picca and Sotto are tough. Picca is a bit easier. I really enjoyed both Sotto and Picca. Sotto a bit more, but much different. Sotto is very good Italian including pizza. Picca is like Peruvian sushi, sort of like a Peruvian Bazaar (food not ambience. Picca is much more casual). I would strongly suggest studying some to the Picca links (there are some good ones) before you go and discuss the menu with your server.