In my opinion, as a student myself anything over 10L is not really backpack level portable. I have an RVZ03 that's 14L and I could fit that in a medium sized suitcase but it's impossible to shove it even in a hiking sized backpack. I would look at the Velka 3 or the K39 case if I re-did my build. The Velka 3 and the K39 are cooling constrained and a good flex atx power supply can get expensive. Finding modern GPUs that will fit these might also be an issue but if you could manage all of that it would make a pretty sweet build.