reminded me how expensive it is to live here!
Yes, more or less, these figures are realistic.
However;
The maid will cost more taking into account the initial cost and monthly extra expenses
If you are planning to have one car, you can go up to the Lexus on monthly instalments; for me I recommend Patrol. And surely buying is a much better option if you are targeting brands with good resale value; generally Japanese.
Entertainment; I think you meant by that all running expenses including Entertainment; so most probably it will be bit higher if you include the abroad trips.