As mentioned early on if you want something electric specific it's out you don't have to wait all you need to do is drop on by tekno-rc or any of it's resellers and grab a v4 conversion. All but the losi v4 has a very specific electric layout.
Important notes..
The only thing missing is a quick tray swap out system (man I have lots of ideas for this, just no way to build)
Single 4s lipo is the best choice for buggy, it's roar approved, you can get them in hard case and will be the most effecient for quick swaps w/ batteries expecially racing against nitro's in long mains. ?who wants to swap two packs, even worse when they are on oppisite sides?? really??
Anything lighter than an 808 or really any brand w/ the light weight parts results in durability loss. Most yes MOST will not want to sacrifice durability for a few oz to 1lb, including me
Anyway my 2c, just go buy tekno and QuitUrBellyAchin