Oh my. I suppose you think you have an actual basis for forming an opinion like that?
The only claims come from Paul himself, which is not a good basis to believe in inspiration from God. Even then, there is no reason to presume that Paul honestly thought that he was inspired by God. 2 Timothy is an incredibly controversial part of the Bible, with many scholars doubting its authenticity, and that is essentially what the opinion of Paul being God inspired is based on.
Assuming we take 2 Timothy to be true, then there is still no reason to include Paul under "all scripture is God-breathed", because what became the epistles were not scripture yet. There's no reason to assume that Paul was talking about his own contributions. Peter seemed to think he was, seemed being the operative word because his words can be interpreted in all sorts of ways. He certainly admired Paul, but again there's no reason to think that he was inspired by God either.
The simple fact of the matter is that the claims for inspiration from God come from other men of whom in turn it is claimed they were inspired by God. There's nothing from God himself on the situation, AFAIK, just a group of people patting each other on the back.
If you look at the Bible as what it is, a mess of historical claims and commentaries on said historical claims, based upon earlier religious myths and legends, then you see that's it a group of men writing a book. Sometimes they work together, other times not so much, and all of this was mashed together into the Bible by yet other men. Of course, if you look at the Bible as what you want it to be, God's words and inspiration, then you can justify any viewpoint you like. There are plenty of Christians who look at the Bible how it is. It doesn't change their faith, it just means that they have a greater understanding of the Bible and where it came from, in my opinion. Likewise, there are plenty of Christians who venerate Paul almost above Jesus on occasion. That's their faith, and their choice to make, but they seem to take great offence at people disagreeing with them on this subject...