I LOVE your hair! Because my hair is super fine and I struggle with frizz, I am always jealous of hair like yours that curls instead of frizzes.
I’d suggest doing a google image search for curly gray hair (assuming you haven‘t already), and see if anything strikes you as a look you’d like. That said, you won’t know how yours is going to look until you grow it out for several months. Everyone is different, and a couple of centimeters of gray roots won’t really tell you what the finished product is going to look like. You won’t really know until it gets to about chin length. It can be a painstaking process — I think the trick is to find your hair fascinating and be really intrigued with where it’s going.
At the end of the day, it’s hair — if you are too conflicted, you can just keep dying it, and if you grow it out and don’t like it, you can always dye it again.