Harry Potter and the Unanswered Questions

You can ignore this post. I just don't want to get pen and paper for this haha...
WARNING: Major Half-Blood Prince Spoilers! Read at your own risk!

1.) Snape killed Dumbledore. But Dumbledore has always trusted Snape. Did Snape really betray Dumbledore? Is Dumbledore really dead?

2.) Voldemort remains immortal because his soul is divided into seven different parts, each part contained in seven separate objects, all of which must be destroyed to ulimately kill him. There are four definite horcruxes to date: the diary, Slytherin's locket, Hufflepuff's cup and Marvolo's ring. Nagini, the snake may or may not be a horcrux. The remaining horcruxes may be something of Gryffindor's or Ravenclaw's. It could be the sorting hat, the sword of Gryffindor (which I highly doubt), some even said Harry himself or his scar. But I thought the prophecy said that neither will live while the other survives, so if Voldemort kills Harry, wouldn't he be destroying one of his Horcruxes?

3.) Ron and Hermione will end up together. That's not a question, it's a statement. The how and the when is the interesting part.

4.) Will Harry get a new girlfriend in his last year at Hogwarts? (I doubt it)

5.) With Dumbledore gone, who will replace him as Headmaster? McGonagall?

6.) With Snape gone, who will be the next Defense Against the Dark Arts Teacher? Will Slughorn continue to teach Potions or will he be running for his life?

7.) Will Hogwarts still be open on Harry's 7th year, what with the Dark Mark hovering above it, Dumbledore's death in the hands of a professor, among many other issues? (Rowling has said that she has written her last Quidditch match in book 6).

8.) Will we uncover the mystery of Snape's character, his connection to Lily Potter (who, as Slughorn has said, was also brilliant in Potions), his becoming a Death Eater, and his dislike-yet-protectiveness of Harry? I mean, really, he could've killed Harry many times.

9.) Will the Order of the Phoenix be relevant in Harry's quest for the Horcruxes? Or are they just there for the final battle?

10.) Will I be able to afford book 7? (ngyahahaha)