I'd rather go with CB, and their series win over Clemson is the series win over the highest-rated team between either LSU or UNC. Arkansas follows right behind, but I think Arky is very overrated this year. Their pitching is really good, but they haven't been hitting and they've lost more games than a top 15 team should have at this point in the season.
But you're right about the relative weakness of their schedule otherwise so far. They still have series against Ga Tech, NC St, and Virginia. We have series still against USCe, Florida, and Mississippi. I think we'll end up close together in SoS at the end of the season because I'm pretty sure Florida and Arkansas will finish below #20 in most polls, and one of their conference foes will likely drop out as well, though I have no clue which one is most likely.
People should check out the Ohio valley conference possibly a 3 bid league. A lot of people know about Austin Peay State but there is also Tennessee tech who just beat Vandy and then another 26 win team in Belmont.