Hey Km90,
I think that your progress is very good so far ( For 5 months ), and that you will experience future filling in your Vertex Area which is known to have always a late growth, and is consuming large amounts of grafts due to limited blood circulation arriving over there compared to Frontline: it surely needs a second intervention if you seek perfection, as per most of cases that I followed: but personally, it will not bother me if the rest of the head is correctly filled.
More importantly, your donor had recovered very Well: on your Photos no one would expect that you had a HT.
Congrats and hope that your journey will be more and more successful. Looking forward to your next months Progress .
Take care Comrade !!