Thanks Ben! Yes, I'm really impressed with it so far and I'm genuinely really excited to go out and use it again. Haven't felt like that about a bit of new kit for ages.
I think the mirrorless quandary is the reason I didn't buy a telephoto lens sooner. But I figured that realistically, I'm not going to update my DSLR to a mirrorless system for a while (unless I win the lottery!) and so I should just crack on and get the lens I want. And, if I eventually update to a Nikon Z camera, I can always use their adaptor for my current glass. My D750 is in great condition, and should keep me going for a good few years yet. 🙂🤞