Haris - I bought a K5 last year and the PO did a fair rattle can paint job on it. He admitted it was his first try at painting and didn't turn out as well as he hoped.
It had a lot of orange peel but after block sanding, a shooting of clear and a good buffing, it truly looks like a pro job now. Hard to tell if yours is a candidate for this, but you might consider it.
PS. Your K1 looks better than mine!