The tech type does not matter much if you want a ground war.
a few Ak's are enough to operate the islands.
Later in the game when bulgaria and yugo are conquered the islands can be missed.
Victory! is a game of strategy, but the location of friends, enemies and dropouts is also a very big factor in the game.
Playing Greece where Yugo, Bulgaria, Turkey and Rumania are TAed is a challenge....
Playing Greece with Yugo as TA and Bulgaria as only enemy will be an easy game.
so tech and nations and strategy are important but friends in the game is more important