Bore kit set up :)

Hi guys planning on getting a bore kit and theres a big debate. My setup will most probably be this

Polini Variator Kit, High Speed
Evolution 3 Polini 2G Adjustable Race Clutch
Polini Kevlar Drive Belt -
Polini gear up kit
Polini/malossi crank
Yasuni R
Malossi 21 mm race carb

However I have a wide choice of kits that I could get. What kit do you think would best suit this setup. I want it too last for a reasonable amount of time but I also want alot of power. Please take into consideration my set up that I will get up alongside with it. thanks

 

Malossi MHR Rep Kit 70cc will work perfect and be powerful and reliable as its a 2 ring kit

 

Do i need the gear up guys ?