I know and have used such blade that you want. Try the Sanwei Multilayer Z. Its 95 grams and above for the ones who have told me who used them. It is all+ despite having many carbon layers and the control is good.
Preparation is the key. Before the tournament, make it a habit to "invade" places to play that you are not familiar with the players. It helps you adjust and builds self confidence.
For durability, a friend of mine who have used both ACC and AGR told me that with him playing everyday for 2 to 3 hrs including multiball sessions, the 2 rubbers reduce their grio by about 30-40% after a month.