Terrain, infantry, and indirect COs will rule this map out with ground battle, if they decide to anyway, also, it looks like this might be a pretty long game, considering how each army starts, you canīt even create a lot of units from both bases because there is not much space until you build a lander/bboat to transport your stuff.
also it wouldnīt hurt a few island in the center to place more properties, there is plenty of space, finally, if there is going to be ground battle, there is never going to be naval. simply because those 8K will be used to build arty-tank every other turn, along with some spammed infantry from the corners, saying that saving funds will get you naval warfare is unlikely, simply because you wonīt build an infantry in order to save for naval when your opponent builds a vehicle each turn.