BOE, good for you! Any workshop is better than no workshop, and I'm sure you'll end up with something that gives you pleasure, and lets you make things.
Last year it finally dawned on me that if I bring home too much wonderful scrap materials, paint, rebuildable machines, motors, tools, and other workshop items, I won't actually have a workshop to use them in. I'll just have storage, where things rust and get worse.
And I also realized that a small space discourages collecting things, while a large space encourages it. And also a small space is easier to clean up at the end of the day. For me in a large space, it's a constant temptation to leave tools where they were, at supper time.
I'm now happily working in a small space. It was easy to build, and today It was comfortable even though the average temperature for the last 24 hours was -14C and the wind was blowing like fall. Not a problem when you're never further than 3 feet from a small heater! All the tools I needed were within an arm's reach, too!