And not to put too fine a point on it, but you do understand the amount of energy you're dealing with in Lipo batteries, right? These things need to be handled with a certain amount of care. There's a reason we use hard case packs in off road cars especially. To prevent the potential for puncture and fire. That's why ROAR requires them. They don't cost much, if any, more than soft packs. Buy hard packs. And you're buying a Lipo charger too, right?
AFAIK, "Graphene" Lipo batteries are not really graphene, as the technology hasn't yet been perfected, at least in any high volume that it's available in RC. So it's just a marketing ploy. Don't pay extra for them.