Welcome to the forums! I don't have a MySpace account, but the PBN10 was available (in North America) from 1980-1982. If it is truly a 10 speed, as opposed to 12 speeds, then we can rule out 1981 & 1982, at least according to my US literature. Sometimes, there are differences between countries, but this should be in the ballpark for a timeframe.
During this era, the PBN-10 was Peugeot's entry level racing model, so provided you are not concerned about the weight of the Carbolite 103 frameset, it will be a good platform for the intended use. FYI. weights for the bicycle is about 25 lbs, depending on actual year and frame size. Considering the application, you should upgrade it to whatever you feel is necessary achieve the desired perfomance level. My only concern is that you may find the bicycle somewhat restricted by the weight of the frame and that the cost of upgrading may exceed the cost of buying a better, used bicycle that meets your needs.