I would go with focus. Parts are very cheap and they are easy to work on. And it's easier to find a focus that isn't all riced out than it would be a civic imo.
Lowe's sells two different buckets. Different molds. They have two grey ones and two white ones. You need to get the other grey bucket. Look at the bottom of the bucket. I believe the one you want...
You could just do the panels that are swirled, but without seeing the car couldn't tell you if it would look that different then the rest of it would. I would polish the whole car. You can just do a...
I would go with the cannon. I don't use it with every wash. Maybe once a month so breaking out the pressure washer isn't an issue and now that I went to an electric pressure washer I might use it...