Avidius :
Alright. Am I correct in saying that I could use that R7 360 and later switch to an Nvidia GTX without having to buy new components? What is the difference between the Z97 motherboard I had done and the H97 you put down, Signalll? Also, the Spec-02 was what I originally had, not the Spec-03.
Oh, one more thing: I'd prefer to keep the PSU semi-modular, and yes, I realize that the one I had originally had down was non-modular.
And then another thing I forgot. I'm planning on playing things like Battlefield 4 and Rainbow Six: Siege. I'm looking to play with at least something similar to PS3 graphics. If I can't get maxed out settings on these games, I can stand that until the upgrades come in in about a year.
Yes, you can switch GPU's from AMD to Nvidia. Just make sure your drivers are up to date. The Z97 motherboard is designed for overclocking CPU's. They often have additional features designed with overclocking in mind. A "Z" board is still okay to use even if you don't overclock, they just typically cost slightly more than their non-overclocking counterparts. Whether your PSU is non-modular, semi, or fully modular wont affect much besides your cable management, and thus your case temps. Fully modular is best, but semi is better than not modular at all. The more modular your PSU is, the cleaner and cooler you case will be. PS3 graphics would be either 720p or 1080p depending on the TV/monitor. You should be able to run those games with a GTX750ti on 1080p, but likely with medium settings to get a playable frame rate.
Once you start upgrading, you will want to upgrade things in relatively quick succession. If you upgrade your GPU, you will most definitely bottleneck your CPU, which would result in NO increased performance. In such a case, you'll want to upgrade your CPU as quickly as you can to see the expected performance upgrade.