Total overal length is 1,888 feet or a little over a third of a mile (575.6 meters or over half a kilometer for you metric folks). The Sovereign class, for comparison, is 2,246 feet (685 meters), so the Grandeur is not outrageously huge.
I skimmed (mostly the pictures) this thread from start to finish and all I can stammer out is: Beautiful.
Yes it will, Vektor has not done this yet on the high res model and I assume it will be toward the end before he adds them, but he will give you a better answer I am sure when he responds to these questions.
If you are referring to the LCARS screens on the bridge and other places, yes they will. If you go to the Grandeur website and look under the project button then under interiors you will see various rooms and things that have consoles and see the LCARS work that has been done. All Interior LCARS work is done by our Chief Engineer and he does an excellent job at it.