The detailing spray is used after the AIO dries to make the removal easier. Usually this is not required unless you use too much AIO.
Tips for Klasse use of AIO are on the site mentioned above. Once you master it, it is very very easy to use.
The Klasse Sealant will make those "scratches" disappear.
The Microfiber should not present a problem for you.
Good luck.
