We plan to visit in April on the way to KY relatives—if the coronavirus does not disrupt the trip...
April is an excellent time to visit...We went to ARK in April on a Fri last year...Hardly any crowds, decent weather. Then went up to the Creation Museum next day...It was a Sat, so a bit more crowded.
And there was a Groupon for a very nice winery near the ARK...I think paid $20 and got tastings w/cheese and crackers, 2 nice glasses and a bottle of wine ;)