compost amounts/ overferting? newb

bout to start my first outdoor grow, have a good idea of what to do, but i was wondering about compost mixes.

i am going to use egg shells, coffee grounds, mulch, and horse manure in the top 1-3 inches of soil. is that right?

and do i need to use under a specific amount of each? i dont know if you can overfert with compost or not, any outdoorsman who can help?

Dude, your on the right track. The horse only has one stomach, so it can be used "green" if spread out in small amounts, or total 20% when "cured", with 60% good, organic compost, like Lady Bug products. Make notes of all the big time Nute people uses, see drearth.com & dirtdoctor.com & the organic section- sub cools super soil. With this, I always use molasses, greensand & seaweed from start to finish. Good Luck.