For obvious reasons I'd avoid Marshall and Boze. And Olaf would "flow" unpleasantly with Aarts...ask any 6th grader.
Seriously, tho, I'd tend to shy away from names begoinning with the same letter as the last name; just my own preference. But I would think Jason, Daniel, Sebastian, or Jonathan would be fine. If you wanted to go the "Mikel" route, I'd personally lean toward the Swedish "Mikael" (mih-KELL).
In honour of your wife, how about a Korean middle name? Many sound really good with Western names.