I would not consider anything other than VPS to ATL. Seven flights a day all on mainline. It also looks like you could hold commutable trips easily at some point based on the flight times. SkyWest, Endeavor and Mesa. Your choice but I wouldn’t consider the third. Also on a sidenote Endeavor is supposedly backed up until sometime in the fall so depending on your timeframe it could affect you. You probably won’t be at the regionals very long with those credentials and the 737 type rating you could be looking at Southwest very quickly. Don’t forget if you wait for endeavor you will have a higher boarding priority on those delta flights because of their wholly-owned status.