Like you, I am getting older and have been in photography and using many tripods for some 55 years now. Currently using a Manfro 3221 metal pod (purchased at a flea market as new for $10) but am now thinking of a carbon fiber to lighten the load for field use. I do have several larger metal pods. I have a wide spectrum of lenses and cameras and subjects that I shoot. I have been here on UHH for 13 years now and have seen MANY suggestions for tripods !

What I suggest as an all around pod is one capable of 60 inches tall without using centerpost. I do like the option of a centerpost to go higher quickly if needed. Four leg sections at the most with a minimum 32mm dia. top tube. For ball heads look for low profile designs with at least a 40mm ball. For me, the legs can be twist lock or lever does not matter - I have used both - both have pros and cons.

I have seen very decent pods that fill my requirements starting at about $250 and heads starting at about $100 - mostly on ebay.
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I bought a Sirui tripod before going on my last photo trip. I was looking for something light compared the Enduro that I use for my heavier equipment with gimbal heads. I felt the "build" was good, especially for the price and would I'm sure is adequately sturdy for most landscape work with shorter lenses. I would not take it out in heavy winds however due to its lightness. I have heard that they are VERY popular in Japan. But, I would not use it with heavy equipment like a 600 prime or bigger bodies.

What is it that you like about it? The marketing description at B&H starts with, "The ST125 ST-Series Carbon Fiber Tripod with K-10X Arca-Type Ball Head from Sirui is designed with mirrorless cameras in mind."

I have been helping shoot a documentary this year. It includes using some heavier duty Manfrottos that have flip locks on the legs. I've grown to dislike them, but don't know if twist locks would be better.

Based on B&H reviews, the Sirui you picked is very good. If it were me, I would order it and the "Peak Design Aluminum Travel Tripod". I would compare them and return the one I don't like. Those two seem to top out in all the reviews at B&H.

One odd question about the Sirui was that the foot spikes can't be removed and it is possible that airport TSA agents might not let you carry on your tripod!