Hi Derek
the pt250 is plenty adeqaute
plenty of psi 3600 and 15 litres a min enough to drive the
whirl away that they sell
the power washer comes with hoses and is a very reliable system with the trusted honda engine and a great pump, this machine also has a sturdy frame and
pneumatic wheels
i would definatley recomend the turbo nossle this is so powerful it can cut into brick
get a large wheelie bin and couple of shovels you already have a pump up sprayer for aditional chemical aplication and they do a few chems as well
a good traffic film cleaner and degreaser high PH
you will be amazed how much S*/) they clean off the drive or patio
all the best Derek