sumwun, in a Nuzlocke, “more the merrier” is really essential. If 2-3 Pokémon in your party faint, the other 3-4 back them up. And if you want your Pokémon higher level, grind more. Doing a Nuzlocke is not the same as doing a Speedrun. The main difference is in a Speedrun, you do not have time to grind. But in a Nuzlocke, you do. So more the merrier. Take it from a hardcore Nuzlocker.