I do believe this game could sell more than 200,000 in the first month, considering all the prime games have sold over 1 million each, I've heard many people saying they haven't played the first 2 games and saying they think it's worth to play them via Metroid prime trilogy, lifetime sales could be over 2 million. About 400,000 by the end of the year possibly.
Buying in 2015: Captain toad: treasure tracker,
mario maker
new 3ds
yoshi woolly world
zelda U
majora's mask 3d