Hey! thats what a forum is for! To ask a lot of questions, and if anyone doesn't know the answer, then you don't get a reply, but the guy's & gals on here are very friendly and someone usually knows the answer to a question.
Window cleaning is like any other Job, some get fed up with there work and change there Job's, other's can't handle the winter, or dealing with customers.
One tip I can give you is if you ever get to the stage were you begin to get fed up with it, Just think of your last Job, or what Job will replace your wc job. You won't want to work for anyone else once you have worked on your own for a while.
You don't have to phone in sick when you want to watch the world cup, you don't have to ask for a day off, you don't have to ask if you can finish early.
But most of all your earning potential is up to you, work hard and reap the benefits or tick over just to pay the bill's the choice is yours.
Your ladders sounds a little tall,so a stand off is a good idea, but you will find them a pain in the a**e for constant work, But like yourself I have a couple of jobs were i find it better to extend them above the windows and work downwards, you won't be able to do that with a stand off attached.
Don't worry about asking questions