I made some corrections to your PCP list
Work from there... you can do this performance level in a build of at least half the cost. 64 GB will not be utilized. You overpay for almost everything. The CPU is pointless. The AIO is shit. The GPU might be overkill, but if its not, there are better versions of it.
You did make the right combinations though. Set yourself the goal of building similar performance at half the price of this list. You will get a much more sensible build. Then, you can pick out some parts that you may want to go a bit overboard on, or maybe look further into the overall noise / cooling profile you've got and spend a little on that (case fans etc.).
Given your use case I'd say you can stick to MSDT (consumer desktop, not HEDT).
Storage for example. I put a marker under that 860 Pro because that is buying a very expensive SATA SSD while you have a 970 Pro next to it, that has much greater performance at a nearly similar price/GB. The latter is a much better choice if, which I think is plausible, you want to move large files around a lot.
You also seem brand oriented towards Asus. Broaden your horizon a bit, I'd say. Quality can be found elsewhere, often in greater amounts.
Also, you spoke of long term beast computer - if you saved for this a long time, I would strongly suggest you take the above to heart, save some cash, and upgrade a little bit earlier instead. Hardware is like buying a new car, the moment you drive off, its halved in value. And not only that, but new cars get faster every year and you drive without a speed limit here. So really, you want to drive new cars as much as possible!
