You still have to download Misa's texture pack (and BoS if you want those textures for mods), but everything else I'm doing will be a single download. I'm also only worrying about fancy style graphic settings.
On the BoP front, I am going to have to get "creative" with Ominous Woods biome. Misa's pack works best with custom colours, which has the side effect of Ominous Woods grass being green, instead of the blueish/brown. Turning off custom colours fixes this, but makes normal biomes a bit more neon green.
For the sake of one biome, I'm going to make the Ominous Woods trees a bit greener in texture. It'll still be "Ominous", just not as dark.