I went from doing 2 cleanups last fall and am looking at around 12-16 cleanups this fall hopefully. minimum building lots here in town are two acres but most of the grassland is under 1 acre. That being said i'm looking at buying a machine to help me with fall cleanups. Around 6 or so people will want the leaves taken away so I am looking at getting a leaf vacuum. What size vacuum do you have and what would you say a good starter vacuum size would be for someone with a f350 with a dump insert? what about the push billy goat vacuums? seems like you'd be at it all day without a vacuum thats under 16 hp???