I recently ordered a pack from a vendor but he messed up with postage or something so it will be undeliverable and eventually will be opened by USPS so I figure my address will be burned very soon... I'm wondering whats the differences of ordering to a PO box compared to a street address. Is it like the same exact thing or is it a higher risk?
Every step in this dance has some inherent risk involved. I personally believe that you're safer at a bigger PO. Box than one in a little po dunk town because the people there are usually too busy/stressed to go above and beyond the call of duty. In smaller towns, there isn't as much mail, so there's more time to probe and snoop. I could be way off base but that's my opinion on it.
Either way, you don't want to provide any fake names or anything. That's another crime in and of itself and you'll just be setting yourself up for more charges and suspicion.