I've been using this backpack for the last 3 years.
Ape Case, ACPRO2000,
https://www.amazon.com/dp/B000WH86BQ/ref=cm_sw_r_cp_apa_i_UqqFDb41G6EKDI currently carry a Canon 5D MK2, a 7d MK2, a Tamron 150-600mm, and Canon 24-105mm, 50mm, 100mm macro, and16-35mm, lenses, along with several flashes and other accessories.
It is very well made, and is waterproof as well. It is very comfortable to wear all day even with carrying all that gear.
You may be able to get by with the smaller model.
I doubt if you will find better value anywhere. It is currently listed on Amazon for $129.98.
I have used Pcloud for years and am very pleased. They offer some lifetime plans which are especially economical.
I have used Pcloud for several years and like it very much. Photos are not compressed; it simply creates a mirror image of the files you select for syncing. It does not compress photos. I had good response from their customer support via email when I had a bit of trouble setting it up on a new computer. Especially if you can get one of their lifetime deals, where you pay a larger one time fee and then have no monthly fees to pay, I definitely recommend it.