I pretty much have thought about and agree with most of your predictions Tann, so I'll just write about the ones in which I diverge:
First and foremost, I didn't realize this until someone pointed it out yesterday, but are the women and children and all the vulnerable people safe in the crypts? How does the Night King raise the dead? Is this a touch spell? What are the limits to his powers? I've seen that if a White Walker takes a living person down, they can rise as one of the Night King's army, what effect is there on the dead? How many dead are in the crypts?
I mean, if the White Walkers get to the crypts, those people are done anyway, but if the Night King has any sort of range on his #RaiseDead magic, they're also done.
"Brandon, and Sam Tulley, survive. Why: they are the only two who can confirm Jon is actually Aegon Targaryen."
I agree that they're the only ones who can confirm, but Jon can ride a dragon, and he should be immune to fire. So despite Bran and Sam likely living due to their +1 Plot Armor, Jon could build a case in his defense as well. I'd say Bran is probably more safe because of everything going on with him, Sam I'm not too sure about. It could really go either way. His death would be brutal to Jon.
"Arya Stark, dies. Why: One of the Starks has to die to make the episode that much more intense and as the last season and considering how many fans love her it makes sense. Her dying will be one of the most heart wrenching scenes of the series not since the red wedding."
I have issue with this just because HOW DARE YOU?! It's mostly just me being a lifelong Stark fan and really really really not wanting to lose any of them. The thought of her dying and rising to fight against them is just devestating. So no real reason she couldn't fall other than I super don't want her to. Plus, I know it'll likely be Jaime to kill Cersei, putting a nice cyclical bow on his storyline, but Cersei has been on Arya's list for so long, I'd be cool with her killing Cersei too.
"Jaime, and Tyrion, both live. Why: Makes no sense to kill them in battle as Bronn is hunting them and the rest of the show will concentrate on Cersi and her army. Tyrion will die later in the episodes to come. Jaime survives up till the last episode and will come full circle killing Cersi and himself, thus removing the Lannister line from the 7 kingdoms."
Just because I'm about 60-40 in favor of Tyrion living through it all, just to spite his s*** family. Still not feeling too confident about that, but I'm leaning in his favor.
"Grey Worm, Podrick, Beric (one eyed), Jorah all die. Why: Podrick will die saving Brienne, Grey Wolf at the head of the unsullied, Beric as its his time. He came to fight the Night King and will die helping to defeat him. Jorah will die somehow defending Daenerys though not sure how he does so."
Jorah I've been waiting to die since season 1. Grey Worm basically told Missandei he only had 2 more weeks until retirement.
But I hadn't. Even. Thought about Podrick, who's now a bad ass, giving his life for Sir Bri Bri. And now I'm crying AND writing about GoT at work. ;_____;
"Eddison, and Tormund, live. Why: Need some beloved characters to die in the final battle against Cersi. Plus makes for a good fun three way drama between Brienne, Jaime, and Tormund in the remaining episodes."
Tormund will live and keep Sir Brienne company as she grieves over Jaime and Pod.
"Strange Possibilty: Melisandre shows up bringing or giving some kind of help in defeating the Night King; Her character is still listed as a main character so she has to show up soon."
I was wondering when she'd pop back in. This seems like a good place.
Just a sidenote I don't want to come true: We're all assuming Cersei is going to die, which makes me second-guess that because this show has done me a lot of psychic damage, and Cersei living would be completely on brand as far as that goes.
Those are my thoughts, and most of my disagreements are emotional regurgitations, though really it's so up in the air. I have no idea. I just feel like the thousands of us watching across the world are going to be doing a lot of weeping together this Sunday.
Best of luck!