The name thing is one of the reasons I don't use a PO Box. And yeah, if you have someone totally reliable to completely eliminate any threat/tracker/spyware, etc the customer could possibly install... I guess go for it?
There's a thread somewhere on mail forwarding services. I used MailLinkPlus. I think it was $10/month? Then you pay a forwarding fee plus shipping. It was expensive with the shipping, but it is a street address, and it's in Vegas. You have to get the forms notarized.

