i'm betting you misread the calculator/chart just like I did the first time I looked at it... the weight curve is based on per wheel... so if you are 330# (not far off from what I am btw) you will want to take about 1/2 that... my guess is prob 70-80psi would be about right...

take a look at the 2nd calculator on this page... if you use the first one that is weight at the wheel, if you run most of your pannier load up front you'd need more pressure up front, load out back and more pressure in the back.
http://www.dorkypantsr.us/bike-tire-...alculator.html