The door does not necessarily have to disappear into the wall. I tend to PSK, lift-and-slide door. The width of the entrance is less important to me than the total glass area.
With sliding doors of any kind, you usually have less glass area than with double doors of the same size... so I don't understand the argument about the total glass area.
Don't worry about the money, this is purely about the house. But you can continue your jabs in other threads if you want, but pull yourself together here a bit, you're getting annoying!
That was not a jab, but a sincere hint. With your money, of course, you will get the house built, but then you have to cut back in many places where you could actually SEE the quality of a house. Everyone here is just trying to give you valuable tips, and it's a shame that such snappy answers often come back from you.