Episode 1 is good. If you want more Life is Strange without the time travel mechanic, you can’t go wrong here.
I’m not sure why the system requirements are higher than the original game. I had no problem playing Before the Storm on medium graphics. The main issues I had running it were a couple of controller glitches (easily fixed by restarting the game and/or reconnecting the controller), along with an annoying popover window that sometimes appears mid game when your connection to Steam fluctuates. My advice is to set Steam to Offline Mode before starting the game so that the error message does not appear.