Material handling and larger projects might be challenged by the lower ceiling limit. You might also find yourself smacking your hands on the ceiling unless you're "very vertically challenged". 12' is somewhat narrow, but you have to weigh that against they type of work you anticipate doing vs the ceiling height. My shop ceiling is 8" and I use pretty much every bit of it plus have many of the lights up between the I-joists so they have minimal effect on what goes on in the shop from a physical movement perspective.
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The most expensive tool is the one you buy "cheaply" and often...