I agree that the machines you are asking about will not consistently meet your requirements for every dimension.

But looking at what you intend to make I would not agree that every dimension needs to be less than .001".

The only parts that look very precise are the ones with 4 ground rods going through them ( and I think if you are careful and imaginative they can be made on these machines). All the other stuff is very easily made on both of the machines you ask about ( if they have good ball screws, motors and controllers).