If you're rejecting John dismissively as "Yochanan of Patmos" and saying that his Gospel has nothing to do with Jesus, then this isn't Christian.
If you are indeed accepting "the overall legitimacy of the discourse" and not rejecting the Gospel of John as an imposture alien to the true Gospel, then that would fall within in the scope of Christianity, in my view.
Then perhaps you need to soften your stance on the following: "If one considers any portion of the New Testament not to be divinely revealed Scripture, one belongs to a different religion than Christianity." (emphasis mine)