Hi simon, I believe you are from singapore

Anyway it is not that true that blades are only for lower Hcpers ... well but I can say is that blades are more suited for better ball strikers

... the reason why I say that is because I myself is not a single Hcper ... but I am using a blade myself and I love it... however, I do not want to go too much into details or else it might bring out the blade Vs cavities topics. One advice for you is the use your friend's set and go for a short game as see how you handle it... as the feeling on range and on green is totaly difference. For the weight, you can do a light search on the internet on the "swing weight" it does not only take into account on the club head weight but the whole weight of the club as a whole.