best not to tempt yourself with gluten free goodies
and legumes are avoided b/c they tend to be a bit harder to digest. Think about when you have chili and go to the bathroom a day or two later. Sometimes you see the remnants of the kidney beans you ate (undigestable)
Why make your system work harder than it has to?
can't really help you on beer (I don't drink alcohol), but there's a reason why it's called beer belly (read the book Wheat Belly)