I see severals problems with this machine.
The first is the hose is too small, at 32mm it is at least 18mm too small, why does this matter, well I have found on some really messy jobs that the inner wall of the poles and hose clog up like an artery on fat, thereby closing the pole and hoses diameter, you then end up with a block pipe which takes time to flush out.
If you increase the size from 32mm to 50mm you lose suction power, so on hard to clean gutters you will struggle.
Also these machines are only for the domestic market to be used lightly, using them professionally will burn the motors out faster imo.
I would recommend that you go for some thing that give more power