You should decide beforehand what type of riding you are going to do.
If you plan to just cruise along, 34/38 should be about right, as the tyres are not going to warm up a lot, but if you are planning to do hard riding in the twisties or track day, you should lower the cold temps a bit as the tyres are going to heat up quite a lot, thereby raising the pressures dramatically.
When I plan some hard riding, I stick to 32/32 cold (2.1-2.2bar)
This also depend a lot on the type of rubber you are on. Softer tyres heat up more requiring softer cold pressures and harder rubber will heat up less requiring harder cold pressures.