I will not be as nice as the good DrJvogel has been on you.
You cant just go by someone elses advice and go for it. That will be disaster.
You need to learn about this stuff just like I did.
BEFORE you even consider a LIPO, go to the batteries thread here and read up on all that stuff, I know it will be boring, but it might just keep you and your family alive. Sorrry, but you seem to be young by your posts. There is nothing wrong with that. But Lipo batteies are nothing to be messed around with.
I know you want more power & speed. We all do. But you need to me educated to what you are getting into.
Trust me. 4 months ago I was asking the same questions as you. After seeing a few You Tube videos of Lipos blowing up I got a brand new respect for this thing we call "batteries".
Please, please, please, do your home work and be an educated person on Lipos if that is where you want to go.
If so, enjoy. You will love them. But remember to always respect them.
*I slowly get of off my soapbox and wave to the crowd*
It is nice to be important, but it is more important to be nice.