There won't be any locked content. You will get the same version as the Patreon subs, only they'll get it early.
How big is the game? My leftover GB are always going up and down 5 Gb for whatever reason but unpacking it took a bit more from C: instead of D: than I imaged. I hope that is enough explanation i don't always know the exact words and yes maybe I'm lazy to check
Also sorry if I ask obvious questions, I do feel a bit weird, can't say if it's something more right now.