In planing for a thru-hike I am planning on doing about 20 mail drops. Because I don't want to be tied down in town on a Sunday waiting for the PO to open, is it reasonable to send 20 drops, evenly spaced along the trail to hostel's where which I can access on Sunday. I will have my son mail them out about 10 days from the day of arrival. Any recommendations on who to use or stay away from? FiveWay