This will be long so you've been forewarned.
First of all, I don't know if one, two, three, or all four will play. Based on conversations I believe there's a good chance we'll see one, or more, play Saturday. I'll get into that in a few paragraphs.
You asked about how much game time. I don't know mainly because of what I've bolded in 334's post. It's impossible for them to be in game shape. If we look at Lewis and Miller we have to take into account how much of the upper body is used in cardio specifically--not to mention other drills.
I'm confident when I say people around the 'net saying who will play and who won't play
DO NOT have the final information. They very well may have a good friend around the program or a word a lot love to use, "a source." I've got a handful of friends around there. More than one said "Wilson had a good practice today." That doesn't mean he's ready. Those that are saying "so and so will play" very well may have a "source." We may wake up Sunday morning and see they were right.
Two words that are the bottom line here. Medical clearance.
All that said it does not change this opinion. There is no one here, or for that matter on BOL or TI, that can say one way or another and it be a definitive statement. We're just going to have to wait and see.
If we see one or more I'll be impressed. Lewis and Miller's injuries could have easily been season ending. Some speculated so.
@BamaFan334 I'm curious about one thing here. You mentioned the zero gravity machine. I don't get why you thought that'd come into play. I'm not in the PT field, but I've always been under the impression it was meant more for knee rehabilitation versus a screw in the foot (Mack) or shoulder/elbow injuries, etc.