For a limited budget, a two-step upgrade policy may be less than optimal.
OTOH, I don't quite agree with pilot's selection.
You are a level 68 Pro, giving you many options though you don't need much (urgently) right now.
For now, a 240/250 yds driver and fitting irons would be optimal. For Master, it should be more, 270/280. Then, high trajectory will help a lot.
Of all clubs available to you, the G20 set is the best IMO, regarding length and trajectory. To me, they are good enough for Master.
You may decide for less now and get some of the big sticks later - your choice.
Putter: My choice was the Taylormade Rossa, good enough for many Legends. There have been some unfavourable reports on the Spyder...
Wedges: A difficult choice if it shall last:
- two or three clubs?
- which brand => which length?
Whatever a player choses, it should fit below the irons, lengthwise.
I for one had almost no chance to avoid three wedges:
Z Satin 64° 50 yds, 60° 77 yds, G20 irons starting at 110 yds. The best chance to close the gap was the 54° 98 yds Z Satin. A two-wedge solution might have been 60 - 80 yds (Ping?).
Balls: Depending on personal preferences and budget planning, anything goes between WGT balls and high-level balls like the Callies. The Starter balls are quite unfavourable but still playable.