I love the idea of this mod but the minimum requirements are quite high for the average user. If Spa Day, Outdoor Retreat, and Parenthood's components were optional instead of required, I'd totally get this; I think careers are a very weak part of the game.
Viewing post in Career Overhaul Suite comments
I've just released an update to the mod that restructures how the files work. It is now possible to exclude the careers that would require those packs if you'd like. Alternatively, you can still use them if you wish and then skip the goal for the skills you don't have installed using MCCC or UI Cheats.