you have to decide what you want, what we think is irrelevant. i would not get 2.5x at low end on this gun, as it will be useless, so the 4-32x would make way more sense.
as of getting this model specifically in a $2k segment - there are a lot of options there, and you better try to look at them before you spend all that $, as to sell it will not be easy, if you decide that you dislike it.
of what i think. it is a heavy ass gun. you do not have to limit yourself with a 50mm there, you can go heavier, like a 7-35x56mm as well. read about it, do some research and do not hurry.
top tier scope shopping is way more difficult that a rifle shopping, you need to like the reticle, the mechanics, the turrets, it is a matter of a personal choice.
Best Scope for Long Range Precision Rifle? There are many "correct" answers, and I will weigh in. Factors include budget, type of
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ps. what he says in there, with 25x to be possible required max magnification for the 6.5cm is true, but with 25x if your eyes are not great, at 300yds you will not see bullet holes in the white paper well. a 32x nightforce shows them quite well. all my scopes are 25x max, though, and i feel no need for more, but, it would be nice to have it, if i would be shopping all over again - i would do it.