So just to finish this off, i forgot that our local ham radio club has a spectrum analyzer, so im getting the upconverter, and amplifier tested as a unit to see what to expect at the different input powers (1-3 Watt), and how much the DXpatrol mk4 delivers on the output, both with and without the amplifier.
It also turns out its not a 1.5m dish, but a 2m dish.