My opinions:
1. If you think the price difference is minimal, I’d say go for it.
2. They run and are stable. I don’t know if they care that you have 8 processors.
4. It’s fixed in 11.6.3
5. They should work in both.
6. 2GB is required, more is better of course, I’d say 6GB is the point where you’d start to get diminishing returns for adding more. But as with question 1, if you’re going for it, load it up. And then invite me over to drool 🙂