Lost 6.06: Sundown, Part 1

OK, ug. This is an embarrassingly short gathering of quick questions and thoughts about last week’s episode, just so I can say I wrote something at all. No theories really, just chunder. I will totally do better this episode!
Can MIB take over bodies, before Locke’s, that were candidates?
He could have gotten off Island as Christian or any number of dead people, but chose Locke specifically as the body he will stay as or because he killed Jacob with it? He had to be Locke to get Ben to do everything. He’s been manipulating Ben since he arrived. Appeared as his mother, for example. To get him crowned king and get him to kill Jacob. Only a candidate or leader can kill Jacob? And only willingly?
Why does he need recruits to “get off this Island’?
Sayid still worked as “a candidate” (smokey can’t kill him) even though he was infected? Why? Is he not infected with bad Smokey vibes?
How does everyone feel about Kate going along? What does she think of Locke? Does she know what’s going on?
Sayid does not translate oil whatsits. Did you SEE the way he killed those dudes? Or even just the way he almost killed Omer when he woke him. Psh.
Has being stabbed affected Locke? He seemed more iffy than usual when offering Sayid his deal. Then when Kate arrives, he also seems suddenly unsure. Maybe it’s nothing to do with the knife (what if it brings forth his Locke-ness?) which surely was poisoned and surely was more important than the plot it forwarded.
Dogen’s story: Making a deal with Jacob is really not much different than making a deal with MIB. Keep thinking of a Jacob as a giver of life/MIB as death and thinking that doesn’t make them good or bad, just counterparts to a necessary process. Now that they both appear to be acting outside their possible purpose, though, intent seems to matter more.
Killing Dogen/Lennon in pool. Will this be significant? Also, did he leave the knife there? Hm. (and of course, how vorpal sword am I thinking now!) I imagine Lennon is a goner, but Dogen very well may not be. He was powerful and was drowned in the waters like Sayid was. *shrug*
Also, did Dogen give in to death like Jacob did?
Jin at the end: was he there because of the money or the watch? And where the heck is Sun? And will Sayid do anything about it?
Sayid, my dear boy, violence finds you wherever you go. You were born this way; it is hard to blame you for what you are.
Still not sure why Claire or someone couldn’t have just brushed the ash aside for Locke to get in. It worked at the cabin.
Where’s Richard? Apparently Sawyer and Jin are “back” somewhere (hopefully forming a fabulous plan for thwarting Locke).
Is Locke aware of Kate’s ambiguous candidacy or does he believe only the ones who represent the numbers are the remaining ones?
Favorite scene was obviously Ben backing out of the pool room….
Mom points out there is a still a possibly working plane on Hydra Island. Is Locke trying to populate that plane with people?
Also, Richard had said that Ben was wasting time with Juliet and the baby situation, instead of focusing on what was important. Locke also warned Ben that they were cheating. And then Flocke says I am disappointed in all of you. What is this important purpose everyone is supposed to be fulfilling?