Despite posing this question on a couple threads,it looks like you've made your call and went with the Bladez,which are a good choice,IMO.For whatever it's worth,though,you don't have to "definitely" buy anything..there are players here who can shoot lights out with rocks and low end gear,so while having good equipment can add to your enjoyment of the game,the bottom line is,you have to find the gear that's right for you and your game,and practice,practice,practice with it until you become proficient with it. I've found that it usually takes a few weeks to get new gear dialed in properly,especially irons,which can be fickle at times regardless of brand..again,the key here is practice,patience and finding what works for you,personally.
In checking your profile,I did notice,though that you rented the Cleveland 52 wedge.If I were you,I'd pass on that and get the Cleveland 56,60 and 64. The C52 hits about the same distance as your Bladez PW,and the PW will usually drop and stop,but if you're not careful,the backspin on the Cleveland will turn a 4 ft putt into a 20 footer.