If you are setting up a 1.7.10 world, these are some of the highest-rated mods from the community:
You will miss out on all modern Minecraft features like the Nether update, deep caves, and new combat mechanics unless you use "backport" mods. Top Mod Recommendations for 1.7.10 mainkraft s 170 modami skachat
It has an estimated 4,000+ mods—more than almost any other version. If you are setting up a 1