Here is what I ended up with after working with architect. Went with gable ends and bumped up to 6/12 pitch. More room for overhead radiant heat, and conventional duct in front room. This is more along the lines of my initial plan. The peak is about 30' tall.
I am framing garage doors for the far back room, but filling them in for now. Wife is thinking we should expand in a year to add on rental units as there is strong demand around here. If that develops, I will move storage back into one of the units, and then back room will be finishing only.
Plenty of room for a nice sign on the front. I'm going for an old rustic/alpine feel to the building. A wood sign with metal lights that curve up an over shining down on it is in the works. Old--billboard style.
For the retail side of things, thinking of a new retail name. Hickory Hills or Kettle Creek are the front runners, both based on local topology.