I am currently looking to build a new VR-ready PC that is as future proof as possible. I have compiled a list of hardware after doing a lot of research and wanted to get a few opinions if I am on the right track or not?
Well, I would recommend that you purchase the GTX 1080 instead of the GTX 980 since it offers a significant improvement in performance. In the link below you can see overall performance of various card including both of the GPUs I mentioned at various resolutions. The closest to your monitor's resolution would be 2560x1440. The GTX 1080 represents the baseline of 100% performance the GTX 980 TI's performance comes in at 73%. That means the GTX 1080 provides 37% better overall performance based on the games they benchmarked. I recommend you look at the individual game benchmarks.
It is important to note that nVidia's recommended price for the GTX 1080 is $599 for the regular version and $699 for the Founder's Edition. Due to it's recent release and assumed demand for the GTX 1080 retailers are selling the GTX 1080 at a higher price than what nVidia recommends so you may need to wait a while for prices to come down to what nVidia recommended.
It seems the average GTX 980 Ti is selling for $600 if you multiple that by 137% to represent the 37% increase in overall performance, that works out to $820 which seems to be roughly equal to the lowest selling price of the GTX 1080 on Amazon by the various independent vendors. That's basically a $121 markup above nVidia's recommended selling price for the Founder's Edition. Therefore, if you can wait for the price of the GTX 1080 to drop to it's normal price, then do so.