Great game!!! I know I'm not exactly a deciding factor in the matter, but I wouldn't delete Neal if I were you, everyone in the comments won't stop talking about the character dynamic between Jack and Neal!!! Plus, since I can't really relate to Jack he is certainly my favorite character of the pair.
(Although I am interested to see who you replace him with, if anyone.)
I'm sure it'll turn out great either way, thanks for listening (or rather reading).