Semi slick pressures

Hey all,

First time using a set of semi's on the car, I've picked up a new old stock set of Bridgestone RE55S medium compounds.

What kind of cold temps should I be starting with on the track? Should I aim for around 32 hot? Air temp will be around 12 degrees celcius. Keeping in mind I will only be doing 3-5 lap sprints.

Thanks!