I like the 8 foot doors in double doors better than a single with sidelights unless the single is quite wide as per millworkman's suggestion (very tall narrow doors can look off). Our ceilings in the entry are 12 feet so I am glad we replaced that 6 foot 8 inch door in our house prior to our addition with this taller one. The 8 foot doors looks so much better with tall ceilings. We have a fiberglass door that looks like wood. It was quite thermal, so not sure all double doors are created equal in terms of energy rating (we are in Canada and the door is north facing so we paid attention to energy ratings). Here is our door in our house under construction. I love the glass as it lets in nice light. Carol

Here is my unfinished door. It is a 3 foot door with 12 inch sidelights. The door is 8ft tall with an 18 transom. My entry is 6'3 wide. edited: Fixed picture (sideways) Also, the glass still has the protective plastic. Molding for above door is being made and the door is very filthy (they just finished trim and sawdust is everywhere). Hope this helps you visualize your space. This post was edited by abrshafer on Fri, Sep 27, 13 at 18:42

Also I would not be bothered with centering the front door. Show a full elevation picture because it was obviously offset for a reason. Symmetry often times is overrated.

dalmcc our door is 36", and it looks perfectly fine in our entryway - which is not particularly wide but very high. as far as "feeling" big enough, it's great. we love it. but yours will depend on how wide is your entry wall is can we see pics?