Bigscreen only just came back around, I wouldn’t go too heavy there yet (and I’m testing it out already myself) Get flex launcher instead. Simple config, does the job. In terms of specs, there is a lot in your list that can vary, and make those specs jump. Where to start, IMO, would be a 7th gen Intel. If an 11th gen is an option, there and up transcoded av1. For storage you’re going to have to do the math yourself in terms of what you’ll have. I have 40tb of media. I used to have a 1tb drive for everything. Storage is how much you want to allocate, nothing more or less. Ram is similar. Find the worst case game, most overloaded with plugins Minecraft server or whatever, and start there on memory use. JF won’t take much, your game choice might.