Looking at your clubs I wouldn't bother with a beefy driver for the time being...
I would buy the three level 50'ish MAX wedges and learn how to use them especially with flops and punches as they will take a lot of strokes off your game.
If you want a longer driver then go for a Ping and use full backspin off the tee as it will then regularly hit 280 yards which off your tees and then the masters tees is far enough.
With the credits that you have saved use level 33 Callaway balls or the even cheaper Srixons and given the scores that you are producing with your current clubs and balls you will then be better than me...