I have read your opening post again.
For the capability you need, with a lower seat height I would say the boxes gets ticked by the 1150GS in your avatar and the Suzuki V-strom in your avatar. Those are both heavy though, but they are both tubeless, the BMW is shaft drive & both of them are superb open road bikes.
If you need to save 30kgs on those two...look at the F650GS Twin/F700GS.
But it seems as though another bike that will tick your boxes...
Honda NC750X
It's extremely smooth, very light on fuel, low seat height. With a few farkles like a taller screen, bashplate & some luggage it is a great tourer and it will easily ride all the smooth gravel into lodges and through the Karoo

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