The problem with using something cheap and coarser than 1000 is it will probably leave deep scratches that will take a while (and considerable wear) to remove. A good quality 1000 stone will remove the material pretty quick and not gouge the holy hell out of your blade.
And, as they said, it ain't easy to start from zero and learn. It will be twice as bad if you have cheap stones.
And, as they said, it ain't easy to start from zero and learn. It will be twice as bad if you have cheap stones.