Yeah the karate uniform works well, I have the Twin Roses tunic and it's pretty similar in design. It is comfortable, though I didn't get the tabards and obi. I've thought about making some of my own... gonna do it eventually.
They're affordable too. I was using a gee that I had from a few years ago.
It works well, it'll give you the Jedi look, and breathes well.
I tell you what, an all wool tunic will give you heat stroke. Not really but it gets hot.