okay here's the map:

Notes: i would use water for the center areas as the tiberium glaciers might cause some serious lags, the design is not quite set, i wasn't sure whether to put the islands facing the middle or off to the side in a spiral pattern so you can choose, the size of the base land is also open the change, I was Planning on using the Australian Outback terrain but the Croatia terrain would also be okay, and the size of the center island is also changeable.