Growth looking good to me at this stage, and in fact I have similar situation with my crown. I'm 6.5 months in and I have less coverage on my crown than you do, so comparatively being at 5 months your growth there is more advanced than mine. I've been told to be very patient with the crown and that it can take 12-18 months before it fully comes through, so I'd say you're gonna be fine.
Good luck and look forward to seeing your updates when you have them