I think your perfect setup is called an assistant :-P. One who carries everything for you
There is never a perfect solution, I would recommend throwing all the bigger stuff in your pack and just having a small and light kit hanging off your front. You're carrying a lot of weight, at least 10+ KG, which is never easy to have hanging off your waist or around your neck.
You can 'steal' some ideas from the US patents office
www.uspto.gov/
|