placement of dining room

Warmest regards Mater Lee and many thanks for your previous advise. Today I am struggling with the placement of the Dining Room. Both my husband and myself are SouthEast facing and if I follow the eight houses theory I would be best to place the Dining Room in East/Longevity or South/Health position. My confusion is that the front door would occupy SE and it is not good to put the dining table in a position beside the door. All the houses we have been viewing have a floorplan which places the dining room on one side of the door opening onto the foyer with the office on the opposite side of the foyer with doors to close it off. Directly along the hall from the front door is the living room. The kitchen is then on the same side of the house as the dining room in the West/Irritation position with a pantry separating the two rooms. The master bedroom is on the side of the house that has the office and lies in the North/Prosperity position. Which places the office in the East/Longevity position. To further confuse things the staircase is in the middle of the house and is curved. How will this affect us? What problem will the dining room next to the front door cause? What problem is the staircase in the middle of the house? Some builders offer a split staircase that goes up from the front foyer to a landing that then goes down to the living room or continues up to the second floor - sort of an upside down Y. It does create a nice curve in the foyer to place a round table. I hope I have been clear - my frustration is seeping through. Thank you so much for your expertise.
Regards,
Tammy Hall