An 8' ceiling isn't good even if you don't have a lift. Many materials come in 8' lengths and the ceiling just gets in the way moving things around (ladders, plywood, pipe, 2x4's etc). I would go 10' (or more) and try to be creative with roof pitch and overhang, door size, etc. If the garage is set back from the house, it shouldn't be a big problem since it will appear smaller relative to the house anyway.
I built my garage foundation a bit lower than my house since my lot allowed it. I have 11' walls, a 9' or 9'6" door height (forget at the moment) and used the same color paint as the house but different siding (vertical board and batten style vs. horizontal on the house). It goes with the house, but looks like its own structure. I built my door from cedar, too, so it catches the eye more than the wall height would.
There are many tricks to make a garage look like it belongs, and sometimes making it look LESS like the house is good. The direction of the roof-line helps, too. Turning it 90* to the house roof may work, depending on your design.