You already seem to know the optimal solution, buy or rent the game and play it on your n64. Afaik there are no released emus that runs Ogre Battle 64 perfectly and I doubt there will be one or more emus that can run it perfectly before christmas. The only thing you can do is wait and if you don´t want to spend all your savings on a new n64 and Ogre Battle buy a used system and a used game. The release of GameCube will lower the price of the n64 to a acceptble level but it won´t and can´t compete with the price of a second hand system. That´s good advice.