As I recall, Ash hooked Pikachu up to a generator so he could power up his electric attacks against rock-types, didn't he? I honestly can't talk much about the anime, 'cause I've only read about it on TvTropes. :x
Be as generous with levels as you like! Moar power is always good. :3 And yeah, giving Eve a chance to choose how to challenge the Vanillish is probably best.
Thanks! How does it actually work, though? I've used my friends to critique my writing before, which has nailed out most of the things I'd struggled with. I'm struggling to break the habit of using semi-colons everywhere. d: