HP Friday 5

It's been awhile since I've been avoiding the ones directly relating to the 7th book, as well as being lazy or forgetful...

Pick one character per question
(I'm going with the assumption that everyone is alive and the kids are still kids...)

1. Who would you become for a day using Polyjuice Potion? I'm stuck on the fact that you would take on their appearance but not any of their knowledge so you'd have to try and play the part all day. Probably just a random inconsequential Hogwarts student so I could go to class and stuff (obviously not during book 7). Although they'd have to be a Gryffindor so I could go in the common room and a member of Dumbledore's Army would be good. Let's say Lavender.
2. Who would you like to have around if attacked by Death Eaters? Dumbledore
3. Who would you spend a day at Hogsmeade with? Fred (and George, obviously, but it said to pick one and Fred has a cooler name)
4. Who would be the person you'd like to give you a tour of Hogwarts? Luna, because she knows all the secrets by now and she would be just as entertaining as the castle.
5. At whose house would you like to spend the night? Ginny's

on a related note...
So, you all know Harry's birthday falls almost exactly between mine and Graeme's, right?
I've decided we're going to have a combined 30th birthday party on Harry's 30th birthday - July 31, 2010. I'll expect you all to be in costume so I'm giving you plenty of notice :)