In addition to the spawn configs posted on the forums, here's my entire mod list I'm currently using, with links to their pages!
Running Minecraft using MultiMC, I've divided the mods according to how they are listed there.
If you want to run this mod list, you must make sure to download the correct versions!
LiteLoader (to run macro/keybind mod)
CoremodsCodeChickenCore (for NEI)
GuiAPI (for Mo'Creatures)
Biomes O' Plenty
Craft and Enchant
Custom Mob Spawner (for Mo'Creatures)
Grimoire of Gaia 2
Rivvest's Villager/Mob Performance Revamp
It's just shy of 50 mods, and with a little work they're all compatible. The focus is on fighting and exploration. You can't go far without finding some kind of dark dungeon full of things that want to eat you! Thankfully, you have a few tricks handy and epic monsters often have epic loot!