Generally speaking, there's no reason to inflate a clincher to 145 PSI on the road. You're more liable to get a puncture, you'll bounce off obstacles and therefore have less traction, and you're liable to blow the tire off the rim.

Work out a rough estimate of your ideal inflation pressure from this chart



Start from there and play around a bit to see what you like best. I weigh about 175 and run 100 in the front and 110 in the rear on 23s which I have had good luck with.