alanti:+1 These can carry you all the way to Legend - anthing below this will require another upgrade. If money is no problem then sure the Raptures are good, but will carry you no further than Masters tier.
Im actually gonna make this a tad easier for you. Alanti is 100% correct. L59 G20s will take you to Legend without any further NECESSaRY upgrades. I don't see any reason to buy anything before that even if you have credits burning a hole in your pocket as there is no need to give additional loot to WGT when you wont really get anything in return from them directly.
When i looked before you were L54 which begins just north of 69000 exp points (XP). To get to L 59 you need 88,515 XP., so basically around 18K points from the beginning of L 54 to L59. If you play consecutive days for 2 weeks that equals over 12K XP, mixed with just 1 practice game, not even a ranked round, one practice 18 hole round and that equals around another 6K XP over 2 weeks. So in 2 weeks if you play one time every day for 18 holes on practice you can be at L 59. If you play more stroke play rounds than that per day and if they are ranked then you will be at 59 in 7-10. I have personally done almost 10K XP in one day and I know people who have done close to 20K. It involves playing all day long and if you buy balls then i will cost you, but it is possible. So don't be so eager to buy clubs that you will have to change as soon as you tier up to Master/Tour Master.
I know the feeling. I was there. I bought some pings in the 30"s. Looking back i wish i would have waited til the g20s at 59.
I don't know everything and its your game and your account so do as you please, but i doubt you will find very many legends or tour legends that disagree with what i am saying, especially with how fast you can be tiered up in this day and age. Assuming you are a legit player.
My entire dollars worth, not just two cents and wish you the best, whatever you decide