BL set-up help

[piecesnparts]

Ive checked out the Novak HV High-Voltage Brushless System 4.5. Has anyone tried this and if so what did you think? I could probably dump a couple more $ if I had to but trying not to. As far as speed, Going 40+ I'm not gonna lie I'd like that but not enough to set a couple hundred bills on fire. I guess I am interested in a system that will handle some abuse be quicker off the line and have a longer run time in between battery changes. I think the lipo switch will have to come sooner.