IMHO you still have enough hair left that you do not "have" to shave. But, you ought to test fly a sly dome if you want to. It is easy to grow it back if you don't like it.
Until you do actually shave, I recommend that you change your hairstyle to de-emphasize the the thinning/receding hairline. Try a high, tight fade on the sides and take the top quite a bit shorter as well. This will emphasize the hair that is on the top of your head.