Haha ouaip je suppose. ^_^

Wow, inside your comp. Pretty cool idea.

Yup, but why single colored cubes ?

I'm popping in a bit late but here are some tips :
-CPU : Intel 4670k (~€200) or 3770k (~€300)
-Mobo : Asus Z87 pro (~€180)
-CPU cooler : Cooler Master Hyper 212 evo (~€30)
-RAM : no brand in particular, but pick some PC3-14900, CAS 9 RAM, a dual channel 16GB kit is about €120 and is well worth it (make sure not to choose "value" RAM though at this speed you prolly wont find any)
-GPU : definitely one with an AMD chip. Much better price:perf ratio than Nvidia (like, a lot cheaper). For the board any brand will do, just pick one of the latest gen within your budget.
-SSD : I'm no expert so I can't help much but 64 or 128GB should be enough to hold your system partitions. I don't have one.
-HDD : Much faster than an SSD for bulk reads (SSD is better at random access hence why people use them for their sys partition but not mass storage). I have a Seagate Barracuda and it's very fast at random access too. Pick a 7200 RPM one.
-Optical drive : Up to you. BD reader/DVD burner combos are ~€50 nowadays. Since I barely ever use optical disks I have a no-name DVD burner that I didn't even use yet.
-Case : You want one with good cooling. The more fans, the better. ~€50-60
-PSU : Don't neglect it. 750W should be plenty, modular is better and if it's 80plus certified it's even better though it's not needed (I have an Akasa Cobra 750W which is not certified but it works quite well)

For the display, IPS all the way. 1080p of course and anything between 22 and 27 inches is the most comfortable.
For Linux, I guess you're pretty much settled with Arch so stick with it.

Well, the Zhanchi and SS are respectively my first speedcube and 4x4 so it's a good start I guess. At least when I average at 45s on 3x3.

Lol yeah it's quite a bit off (see what I did there ).

Yeah but most people are disappointed by ChromeOS since you can do barely anything with it. Even Linux users who know their stuff are limited on it.
Android on the other hand is quite successful for its cloud integration, and it doesn't depend on it (actually one could live without any gapps, but it'd be quite boring).