Here's my sage advice, not based on false modesty but been there, done that.
As I'm writing I'm thinking that you are sure to ignore it, everyone does. Something about tripods and heads makes people think there's a magic formula, and they can find it. There isn't.
1. You don't need to spend $1500 (Gitzo tripod and a RRS head) to get 1st class performance. But you do need to spend about $800. More on this later.
2. Buy a tripod taller than you think you need. You can always go down but you can't go up. You may have to set up on irregular ground, set up in an area below where you can stand, set up with the tripod downhill from you, want to use the tripod for a scope and/or binoculars and want to look "up", and so on.
Another reason for a taller tripod is you'll want to use the center column as the last way to gain height.
3. Collets (twist locks) are better than flip locks. They lock up better (stiffer) and that don't get hung up on things, and they make for a more compact unit to carry when folded and stowed. They never get out of adjustment because you adjust them everytime you use them.
4. Leg diameters and collets make more difference for stiffness than materials or even the number of leg section. Taller tripods tend to have larger diameter legs.
5. Carbon is nice stuff but somewhat overrated. The weight saving is actually not that much. In equivalent sizes, that you are most likely to be interested in, the weight savings is usually about 1/2 pound, sometimes 3/4 pound. There's no free ride here. Whether it's carbon or aluminum, more material makes for a stiffer tripod.
Does carbon damp vibration quicker? I suppose but it's a minor point IMO. Carbon is nicer to touch, warmer in cold weather and cooler in hot weather. It's also quieter which helps with wildlife photography
6. Ball heads. I like them. The advantages of a good ball head very much outweighs all other heads, within limits. Obviously if one were using a 600mm f4 lens on a 1Dx you would want a gimble head. But for smaller telephoto lenses and everything else, sans maybe serious macro, a ball head it great.
I've used a Canon 400 f5.6 on a 7D with a ball head for years and wouldn't change a thing. Just be careful about walking away from your rig w/o tightening the clamp knob. After all, you only have one knob and not three in the case of a pan head. BTW, video heads are out because they're only two axis, for conventional photographic purposes.
Benro tripods are just excellent. Very tight specs. Very stiff joints and collets.
Markins heads are frankly amazing. They lock up in a quarter turn like the rock of Gibraltar. There are others, Induro, Arca Swiss, and so on, but they aren't better.
So here's a brilliant $800 kit that I alluded to earlier. It is 1 pound heavier than your 2 kg estimate, but tall.
https://www.bhphotovideo.com/c/product/1157821-REG/benro_tma38cl_mach3_9x_carbon_fiber.html
https://www.markins.us/product-page/q10i-with-quick-turn-knob
