Hi, I'm just getting all my equipment set up and I've seen a lot of contradiction on various websites about the size of ladder I need. I'm just going to be doing domestic 2 story houses for the time being. Some people have said anything over 4m is overkill, and others have said I need at least 6m! I'm going to be walking my round so I don't wanna be carrying any unnecessary weight. So what size ladder do you recommend? Cheers.