I have resigned myself from carrying huge camera kits! Over the years I use to lug around a huge backpack with three Canon bodies and several "L" lenses...I even toted a rolling suitcase for commercial work. After a day hiking in the mountains with a 45 lb backpack, I was spent. I always worried when I travel internationally " will I have the right stuff for my exotic escapades" ?
So as I moved forward in photography....because we are always capable of learning no matter the experience. I sold most of my big bodies and lens, traded a few and now I am traveling light. "what a pleasure it is" I don't miss those big kits, I don't think my images have suffered and my body thanks me often. I can now carry a few camera's and lenses in a small backpack, a smaller lightweight carbon tripod and I'm set. One drawback....I carry a few more batteries, because as mirrorless cameras have gotten smaller that DSLR's so have the batteries. I can shoot quicker on the run and with IBIS, high ISO, and the super fast burst rates, huge buffers and tracking (no mirror to flip), my motorsports work has gotten better. (nothing static about photographing race cars) !
So when you see me with my tiny full frame Sony Alpha or my APSC Fujifilm...try to appreciate the gist of what I'm saying. The big top camera makers are all in on mirrorless...just happens Sony is way ahead. Check out the Sony A7RIV...While I don't need 61 megapixels (OMG $$ file sizes). At 23 oz with battery and cards it's light and compact. Almost a pound lighter and inches smaller than the Canon 5DM4.
So think about it....your back will thank you in the long run!
Cover photo taken with an 8 mp Olympus.