What Opy says!
I'm afraid you and me will never win anything due to the many talented and "extremely talented" players rising up every day. Alas, this should not spoil the fun - I enjoy the pictures like on Day One, and the odd perfect shot contributes to the fun, too.
Advancing in tiers happens quite automatically, because the WGT average collects our best rounds, and over time they add up to the correct number. As a TP you are safe from tiering up as long as you do not shoot any(!) round of 33 / 67 and better.
That said, you have one club missing in your bag. You might add the Starter 3H hybrid club (190 yds) to close a gap in yardage. Custom balls (from 1 cr / round, misses in CTTHs excluded) slow down the meter if you like to improve your game.
Be aware though that tiering up to Master comes with long fairways which may be uncomfortable and fun-spoiling with your equipment - an upgrade looming behind that corner :)
Have fun!