Is my seedling too long?

Hello, I honestly wouldn’t worry about it as of now. Once more leaves form it will get more light and stop stretching. Although height is ultimately genetic if the height does become an issue you can always implement some sort of training technique such as topping or LST is always a good option as it is known to increase yields. Good luck and I hope to see how she turns out. 👍🏼🌳👍🏼🔥