Help me get the proportions right for Craftsman style casing

I am looking to put new baseboards and casing throughout the house and we like the Craftsman style like this. I have seen tons of pictures and videos of how to do this but making a header out of a 1x6 and putting a 1x2 piece at the top and bottom of the header, and then running a slightly smaller vertical casing like a 1x4. I am trying to get the proportions right. I do not have high ceilings by any means at 90", so that only leaves 10" between the ceiling to the top of the door.

My question is, to get a look like this for all our doors (3 panel doors) and windows (jamb extenders will have a stool/sill), considering the ceiling is low, what dimensions should I use for the vertical, the header, the top cap/filet, and even the baseboards? The baseboards will just be a flat piece like this, probably a true 1/2 thickness so it is a little thinner than the casing.