I would "encourage" someone else to carry the other backpack with human necessities and get a doggie carrier backpack for yourself. We have the Casual Canine carrier.
Casual Canine Ultimate Backpack Pet Carrier - Blue at BaxterBoo
I found front carriers dangerous on hikes, you need to see obstacles at your feet. A doggie back pack carrier and the use of trekking poles will make your day more fun
