Try Atlanta to IMT (Iron Mountain, Michigan)
I've seen this round trip for under $400 and it gives you at least 3 segments each way and the miles from Atlanta to Detroit, Detroit to Escanaba, and Escanaba to Iron Mountain. Sometimes a connection through Ohio is in either the return or the trip there. Its about 2500 miles round trip and gives you 6-8 segments.
It won't beat your MQM's, but it will give you segments fast if you are traveling to MI or WI every week.