Saint Louis Park
Great Puzzle - tried a lot of things, there are many alternative 49s, but I can only improve this by one to 50. Follow jdLudlow's plan but remove Drop Ships and replace directly with Pirate World (built with New Military Tactics on a previous round), thus saving one more card in hand.
Ahhhhhhh. I can't believe I didn't think of that. I found so many different 49's, but just could not squeeze out that extra point.