You are right. Kong is going against Logan, Beauty & the Beast (another beast in the title), Guardians, Pirates, Despicable Me 3, and a bunch of smaller but smarter apes in War of POTA.
Opening it in March is probably the best strategy. They could have April but I think every studio is afraid to open against Fast 8 and Guardians opens early overseas in late April.
Tough to be a king....