Hello! I recently picked up a kit to build, the FT Cub, and was going to put the internals of my old Parkzone T-28D Trojan but have decided to just go for one of the power packs instead. On the packaging, it states to use the power pack “C” I believe, but I am having trouble finding one immediately and it’s even on back order online. I have found a “B” at my local hobby shop, would this suffice?! Is it going to be under powered ? Would I be wasting my time and money? I reaaaaaally just don’t want to waste more time I want to BUILD AND GET IN THE AIR AGAIN! Any help is appreciated. Located in San Diego, CA. ( need to do it before this weeks end, as my dad has come to spend the Easter week with my family and Grandpa is looking forward to some RC plane time with me and his new grandson.)