That's a 4-hour sit in MSP.

I'd say wait until Sunday to see what the load looks like, then make the change. Looks like plenty of T seats available, so you should be able to make the change for just $100. Then, complete OLCI and the upgrade should come through then if enough seats are available.

You should be safe on that BDL-MSP leg, but still too early to tell on the MSP-AUS leg as an SE. But that's a DC-9 and row 5/6D is just as good as first IMO.

And the 4-hour sit would make for a good time to join WC.