Use the drive share (must donate for access), then back up that source to 2 other cloud sources, and then make a local archive that you keep up to date on local RAID-1 (you go obviously go higher but this is costly). Once you're caught up, you can just script daily updates to take place automatically. Afterwards, your local nut server is just as basically as good as HBG.
I know this is all very obvious (and expensive) but when you think about the entirety of what you're storing, it's really not bad at all. Rather have something and not need it than "need" it and not have it (not that video games are life and death - though thats just me!)