@mons don't know what's best to do.

I prefer to keep the hair, and have a smaller pic.
I hope this one changes hairstyle by the next time I fix him.

I know what you mean, but we generally keep the whole width of the hair like you have done, even if it's bigger than the area it'd usually take with somebody with 'normal' hair. The only difference I'd make is to have the face slightly lower down so that there is less of the shirt showing and a larger gap above the hair.