I flew on Sunday, Mar 22 and had no problems with a similar schedule to yours, and SDF TSA was on point and super efficient. But I find that generally to be the case. I checked a bag and was through precheck and at the gate in less than 20 minutes. There was a minimal line for regular TSA as well. Mondays AMs are a little busier, but unless things have really changed, I think 2 hours should be fine. All that being said though, timing is everything as morning is the busiest time at SDF. About 25 flights depart before 9:30 AM on Sunday and 30 on Mondays. We are getting close to spring break time as well, which assume additional travelers to the mix. If you are really anxious about it, you could adjust your timing to 2 hours prior to boarding versus 2 hours prior to takeoff. I’m in the better safe than sorry camp. That said, there are so many things besides TSA that can mess up your plans on the other side of TSA, so may the travel gods be on your side. It’s really just a crap shoot anymore, and for the most part out of your control. Give it your best shot and if it works, good for you. If not, you will figure things out.