Questions about future upgradability

So, I'm completely new around here, so apologies if this topic doesn't belong here.

So, I purchased a Bolt II almost a year ago at this point, just in time to watch some fairly notable technology improvements crop up almost immediately afterwards (X99, DDR4, Haswell-E, Type C, and so on). I like to think that I'm not completely incompetent when it comes to PC tech, but I've started to worry about future-proofing (yes, "proofing" is a strong word; more like "catch up") with a lot of potentially useful tech coming out that looks as though it will need to rely on the new X99 in order to either function at all (worst case scenario; see Type C USB, DDR4, and I'm willing to bet Skylake whenever it eventually hits) or at least do so to optimal ability.

So my question, as a DS noob, is how the process of upgrading works when you're like me: too terrified of screwing something up irrepairably to dare attempt anything fancier than an HDD-to-SSD swap? Does DS offer any sort of trade-in program where older components can be sold back for store credit towards a new build, or would I probably have to track down a potential buyer and then start from scratch? Or, is there a way to ship my Bolt II off to have a professional accomplish something like a motherboard swap (mainly what I want to do)?

Any sort of answer would be appreciated, since I literally have no idea what I'm doing here, and eventually the day will come when I need to upgrade either way.

Bolt II build (the super-short, can't remember it all version:
Asus Maximus VII Impact (I believe)
NVidia GTX 780Ti
Intel i7-4790K (@4.0GHz)
16GB Corsair Dominator Platinum DDR3 1866MHz RAM
(A 1TB Samsung 840 Evo SSD I intend to hang on to)

That's fantastic. I was afraid upgrading might end up being a pain. Thank you.