I don't think TrackIR is too important in this game. Try mapping the saved views for tgp, tad, the consoles etc on your stick (I now press pinky+coolie hat for these views). This way you can switch between normal view and say full screen tgp view instantly.
TrackIR is imho more useful for dogfights as in Lock On or IL2.
But if you have money to spare, go for it.:D