1. Tink has slept in our bed since the third night after we found her when she was 2 weeks old (she had bad flea problems at first, so we let her in after they were clear). When she was still too small to climb and jump, we'd take her to bed with us every night, and she'd sleep with us until the morning. Now we let her do what she wants, but she's still on our schedule. She comes and sleeps either by our legs (she loves laying between them) or up by our heads. This is actually nice because she's on our schedule and we don't have to worry about her during the night. Plus, she wakes us up when she's ready to eat breakfast.
The only problem is that she is the queen of our apartment and we have to move around her to get comfortable..she wouldn't have it any other way.
2. Tink has dry food available to her all day. We give her a pie-shaped slice of wet food in the morning and once around six for dinner. We use Iams kitten food, and if you buy one of the huge bags of dry food, it'll last you forever (we've been using it for about 3 months now). We buy the larger cans of Iams kitten food and put them in the refrigerator after first opened...they last about 3 or so days.
3. Since we had the flea problems at first, up until she was about 6 or 7 weeks old, Tink got a bath once a week to clean her up. It's been about a month since her last bath - we do spot cleaning if she needs it. Since she's mostly white, her fur is looking shabby and she will be getting a bath this weekend. She doesn't like it, but my boyfriend and I do it together and she has to deal with it.
We wrap her in a towel afterwards and rub her dry, and she usually goes to sleep on after, so I'm guessing she's pretty forgiving.
4. We have a collar that she wears a lot, and we just bought a harness for her a few weeks ago. She has not yet used it because she's a bit small for it (although now she'll probably fit). It seems as if you'd have more of a hold on her if you have her on a leash. When I drive to Cleveland to visit my family, she is allowed out in the car because she doesn't like her carrier that much. We use the leash to move her between the car and the house, and she doesn't have too much of a problem. I do prefer the harness over the collar, though, because when I use the collar I worry about choking her.
Hope all of our opinions help...just take the feedback and make your own decisions to fit your lifestyle.