Setting 4 link ride height

[Jordanwake]

I am ready to install my wishbone 4 link on s10 frame and am confused on how to set the ride height, I don't have my 1949 body mounted but know I am gonna use Re7 airbags front and rear and I am gonna run 245/35/r20 tires so 26.75 overall diameter. I wanna be able to lay it out when parked but want it to be drivable. I just need to know how to set my initial ride height when I put it on the jackstands

thanks