Hello Dmitrii. Thank you for the amazing review and feedback. Was wondering when someone was going to break my 5 star streak ;)
So with the Athlete Pack the tipping point is about 6'7 or so -- so it will be short on you. That said, there are a number of tricks I've learnt over the years and am happy to help get you dialed in with a video fitting.
Of note -- Had you gone with the Adventure Pack you would have had more options. The design includes a removable shoulder harnesses and with the XL installed (not on the menu), I rate it to 6'10. The Adventure allows for torso length adjustments (+/- 2') by moving the shoulder harness velcro connection in the backpanel.
Given your loadout I can tell you know how to pack as you had a good haul in the Athlete and by your accounts it did the job well -- but given your build I would say the Adventure would fit you better and still feel/look small.
As a small brand I've worked to find ways to accommodate big/tall and small too! I offer both packs in different torso lengths and offer 5 different sizes of hip belts from XS at 26'-28' all the way to XXL at 54'+.
-a