Yeah, I agree with BD on position "A". Too much hammer noise.
ZP - Of the mics you have available, I would suggest trying the NT3's, although, I must conffess, I'm not familiar with them.
Harvey and LittleDog were "instrumental" (pun intended) in helping me get a really great sound from my grand.
There's a thread here:
https://homerecording.com/bbs/showthread.php?postid=444746#post444746
with pictures of the setup. The setup looks odd, but listen to the results!!
I would try to point the mics slightly off axis from the hammers too, just to reject any unwanted hammer noise.
If you're recording in a hall, and it has great acoustics, I would try to take advantage of that natural reverb the hall would surely offer.
To achieve that, I'd take that V63 and place it about 4' away and 3' above the "crook" or "bend" in the grand.
Remember though, this mike is to capture ambience and not necessarily the piano, so consider that when you blend it into the mix.
Unless you really want to accentuate the bass, I'd avoid miking the grand from the tail.
Hope that helps? I'd really suggest reading the entire thread I linked. Harvey's the master when it comes to this stuff, and I'd never have been able to get the sound I do if it weren't for his help.