Ideally climbing pack

I bought this backpack because I wanted to have an extra backpack for all my climbing stuff.
It was important that I have a lot of storage space in a relatively small backpack and he has two chest straps so you can wear it well also to via ferrata.
The finish is at the price perfectly fine.

Here's what I can transport without problems with the backpack:
a pair of climbing shoes (clamped by carabiner to a shoulder strap or in the two outer compartments)
8-10 Expressen
Ferrata
Slings
Change of clothes
Chalkbag
Harness
Tape
Various carabiner
2 Semi-automatic
2 bottles of water (in a backpack or outside in the subjects)
First aid kit
Climbing helmet (to the small strap clamped above)

The backpack does not sit even fully loaded very pleasant on the shoulders and chest straps from slipping, thanks to the well.
And even though many write here could be in the backpack no purse or similar place, the backpack on the front is a zippered compartment where you can store things deratinge easily.
The only thing the two "subjects" of the strap, what to store as really useful are strikes me as a bit odd and useless I do not know.