It's possible, although I'd be counting those as business days, rather than calendar days.
I'd allow at least a couple of weeks, to be on the safe side, and be pleasantly surprised by a faster delivery time.
For what it's worth, USPS "Priority" International is just basic parcel post delivery, except for the small flat-rate boxes and envelopes which are tossed into international letter mail streams with the First Class International items.
