I know, but you're not trying to convince me - I'm trying to convince you :-)

Of course I'm trying to convince you - not that God exists, but that I'm justified in believing that he does, which is not the same proposition.

Neither of those are foundational problems to me - I think solipsism and belief in zombies are both meaningless stances.

"A is not a foundational belief" does not follow from "not-A is meaningless"; in fact, I think there may be a good argument that "not-A is meaningless" is practically a sufficient condition for "A is a foundational belief", at least for certain values of A.