It's answers like these that are impossible to get outside of a forum setting. You folks have given me a lot to think about.

The last time I used a refrigerant dryer was 1977 and the cost then was right at $1,000. But if you need dry air this will deliver it.

Based on just what is said here it looks like I need to rethink this project. I might have to go big or not at all to get to what I want.

And thanks! And if anyone has anything else to add then don't be shy. I am sure others can use this info, too.