Unless you think that there might be a reason you would be denied a first class and you're aiming for a flight career, there really isn't any point in my opinion. If you're in generally good health, correctable vision, etc., no real reason to spend any extra money now.
On the other hand, if you have some medical condition that you feel might be questionable, and you would not do flight training if you were going to be unable to hold a first class, then you might want to go ahead and find out now. That's probably a pretty unlikely scenario, though.