Am i crazy/stupid for wanting to do this?
Changing your first name to the Polish variation is commendable. You shouldn't be forced or shamed into carrying someone else's heritage around. If you are saddled with any other non-Polish names then by all means change those as well. And you don't have move to Poland first either in order to earn some unwritten right to change your name back to something Polish. Look at all the many different names and often absurd spellings used by other people for themselves and their children all around the world especially in places like America, Canada, Australia and Britain. You want something traditional which honors your Polish heritage. Nothing wrong with that at all. Just check to see what if any legal paperwork needs to be processed in the region where you live. Do it right away if you haven't started already.
Others here on PF are forever screaming about the need for "multiculturalism" so by all means go ahead and nail your Polish colors to the mast!