The description for Angel's Infinite Ores says: "Usage of the RSO Mod is highly recommended, it features the generation of ore patches which have a percentage of infinite ores", however RSO is not included in your modpack.

Does a different mod handle the generation of infinite ores? Will installing RSO interfere with existing ore generation?

Yes RSO works well with this modpack. Ores added by Madclown01's mods are correctly handled by RSO too. I will add RSO as optional dependency for modpack. As for me - I like to see ore patches on map preview and adjust ores with default sliders in map generation screen so I rarely use RSO in my games.