Claire - check if the Spare One works in Canada or if they have a similar version - if yes this is perfect for your needs (basically for emergencies).
Otherwise - if you are HIKING IN ... seriously ... you need to consider EVERY SINGLE GRAM of what you will carry. Unless it's about 1km on a road and you can take a wheelie trolley (which it is not, by the sounds of it) then carrying a pack will be really, really tough for anyone who does not do it regularly.
When we hike in Europe, our packs are under 10kg - no sleeping bags or food or anything like that, just ONE change of clothes, some warm and wet weather gear, a few light toiletries and a first aid kit, a phone and a passport. And that is QUITE HEAVY ENOUGH for an ordinary person. Assuming you have to carry some food in with you, and perhaps are not into living in the same clothes for a week, you'll already be laiden down. Don't pack more. Take a phone, charge before you go, leave it OFF the whole time and just use in an emergency. That's sufficient. Take a separate camera with a decent battery so you don't run down the phone using it as a camera. Leave the laptop at home - it's too heavy to carry; as are books, ipads, spare batteries, make-up and many other things you may be tempted to bring. You will thank me on the hike in
(Go hiking before you leave, practise carrying the pack, break in your shoes, buy hiking poles and have a great time).