How about some pictures?

Paint your house and ceiling first. You are probably asking for trouble if you put the floors down only to paint over the top of them. If you can, remove the tiles in the kitchen and paint just behind the line of the splashback too. Once painting is done replace kitchen benchtop then splashback. I would call the bathroom its own job and do it individually, unless you only need to paint the ceiling and if a tiler doesn't need to be brought in for anything else in the house? A lot of bathrooms now are getting tiled from floor to the ceiling if this is the case, paint the ceiling first, then tile. If walls need to be painted, it wouldn't really matter if you did them first or last, though if you did it first expect to do some touch-ups. I guess if you really wanted, you could do the first coat before tiles then second after... I don't exactly like stopping and starting painting, so I would do the walls (if they needed to be done) in one hit, after its been tiled. Well that's the order in which I would do everything... Really, for what you're asking, the painting could be done at anytime, but to make life easy on yourself, I would definitely recommend doing it before the floor.

There are more cons than pros, I'm afraid. Near black floors will show every speck of dust and need constant maintenance. They also will suck up a lot of light, so you need to add lots of extra lighting. If they are shiny, they also show marks just as a mirror does. They are not the best for re-sale properties either, as most people prefer something more medium toned for the long term. I recommend going with a more classic floor, and then adding black accents in furniture, etc. Your kitchen could be mostly white cabinets with some very dark stained sections. Here are some ideas from modern to traditional. Click on the pictures to enlarge them.

Is this a new build? I would suggest you look at each room in detail and put the actual furniture arrangement you will have, to the right scale, and think about how you will move through and use those spaces. Some of those look odd to me, but it may be the way you intend to use those spaces is different to my imagination. The access to the changing room seems only through the Kitchen. and either out the front door or dining and living to get to the pool area. How will this be fenced? Where is washing to be carried from the laundry? Is there a line nearby? Out the front door, or through kitchen dining and living? Bed 4 has to go through a living space to a bathroom, the living room is hard to imagine in use as arranged, and bed 2 and 3 look to have the beds right into a corner for no reason. How would you accommodate a double bed in these rooms? In a few years this may be what you want. If you will have other furniture, draw it in. There a large walk in cupboard/robe off a store room. What will be in the storage room? Draw that in too, so you know there is space and it won't block access to the robe. Many of the storage spaces/benches/shelves are shown with corner shelving arrangements which isn't often the best use of space. Bed 1 looks out onto the front access. How will you provide privacy? What different uses do you imagine in the living, family and rumpus rooms?