What do I need for my new 8ight race roller

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I already have the new losi e-conversion kit back ordered... but I was wondering what hop ups, if any I need and what spare parts should be in the tool box. I will be racing on a hard packed dirt track, she will get my Neu 1.5d or my Medusa v2 2000 as the power plant with a 4s lipo config. I don't want to go crazy with stuff, but I want to be reliable and have the necessary parts on hand for quick fixes!

Thanks!!