We use gutter vac and have petrol pressure washer. Are you saying that you are going to flush the gutters through once vacced? Personally i don't, your extandable lance is fine for cleaning the ext. of gutters etc, although the power pole has the right connection for the gutter spike, i found this out once the spike was delivered to me..
On the camera front, you don't need one for houses, you can feel if there is any debris in the gutters, i would only invest in that set up if you were doing bigger contracts.
The same with the generator, for what they cost, i would hold fire until you need one, and make sure its going to pay for itself, we recently did 10 office blocks with gutter vac, and just used the mains electric. We were considering a generator, but need to make sure its worth while. The majority of householders will be able to supply electric, and i haven't had a grumble once from the tight ones yet about using their supply!
I must say it's sooo nice not getting plastered from jetting the gutters out like we used to!(and the time saved cleaning up is a god send)
