If you go PCGS, I would crack it out and submit it, crossovers always seem to be a crapshoot and successful crossovers to a higher grade are pretty low % wise (just my opinion). But, crossovers do ensure you get that NGC slabbed 64 minimum.
We can only base on pictures, and as we all know, can be tricky, so go with your gut. I'm sticking with my MS65 on this one., HOWEVER, I can see where others are coming from with the lack of luster holding it to a 64.