I Need Some Design Help... From You!

At the end of the month I will be moving into a new apartment. My current apartment is furnished so I have nothing! That means I need to buy some new furniture. In the past, I've done a better job of decorating my living room than bedroom. This time, I'll have a roommate, the dishy Lizzy, so the living area already has some furniture. Since I don't like sleeping on the floor, I want to focus my first efforts on the empty room, my personal space, the bedroom. I want to be daring but comfortable. I have no problem finding images of rooms I like or don't like, I am just not so sure about executing it myself. I like too many different styles, I get scared of being "too original" as in bizarre, scared of committing, hesitant to spend money, and I end up being boring and bland. Since I'm starting from scratch, I think this is a chance to create a room I LOVE! Will you help me? If I post some ideas, will you comment, tell me the truth, help me come up with better ideas?

About me... I like clean lines. Right now I am in love with mid-century style but I worry that a room full would be too linear and boring, and expensive. I am leaning toward black furniture but I don't want to just go buy an entire bedroom suite, that's too boring. But then I worry about mixing too many styles. Can I mix black furniture and brown furniture? The room has hardwood floors so that's another wood color to throw in the mix. And I have a hard time knowing how to mix patterns. And also, not so great at hanging or clustering art. I grew up in the South in a very traditional, preppy town so I tend to lean toward classic styles but just like the green cardigan with pink and white argyle I just got rid of, it's easy but sometimes it's too boring.

Here's what I'm thinking so far...

The room is pretty big, probably 10x10 or maybe 12x12, and basically a square with only one nook/cranny.  If I remember correctly, here's what it looks like.Right now the walls are bright blue. It's a fun color but not what I'm looking for. But it does mean painting the walls is OK. I'm pulled in 2 directions, a patterned duvet cover and medium grey or brown walls, nothing too dark but not white. Or white bedding and painted walls. I'll be honest, painted walls scare me so the diagram above has the walls colored in a way I think might work for my two sides, scared and daring. I could paint the wall behind the bed dark orange and the other walls a light grey. Then do white bedding with black and white accents, throw in a little orange and maybe some green. This image from Crate & Barrel is beautiful, the walls are green, but you get the idea.
I also liked this orange duvet cover but I think I like the idea of white bedding and colored walls better. What about you?
The Bed: I'm thinking black and no footboard. I don't like how it cuts off the room or how it makes it harder to just flop onto the bed.

Next question: Bedside table. Here's the problem...The closet is small so I will have to store things in creative spaces. So a bedside table with drawers or shelves and baskets would be best. But I just found and bought (completely returnable) this one at Target. I love it but am not sure it's the most practical. Here are a few others:I think I'm leaning towards the last one but using an actual bookcase, more storage but in not too much more space. I love how it's painted green inside. And I think the white could look amazing against the orange wall.

Last thing: Desk. I probably need one with a big hutch but I don't like how it takes over the whole wall. Plus I wouldn't keep it organized. Here's the one I like most right now. This would be against a grey wall. I like mixing it with the green file cabinet which also adds more storage. A few other ideas:
Well that's about it for now. I'm sure I'll ask for help with rugs and artwork later. Thanks!