Hey, now is like the best time to get into PSO2!
The game still is unannounced for the US, but the game is pretty much fully translated, and now there is a english installer and auto patcher for the game which makes set up brain dead easy.
Check it here! arks-layer.com/setup.php
PSO2 won't need much, just about all modern PCs (from like 2008+) will be able to run the game. You should pass this along to trey too, if he likes monster hunter he will love this game.