i started my beds of with 10 tonnes in total, i had 5 ton of well rotted donkey manure delivered, the rest i made from compost or from digging up the leafmould from the horse churned paths through the wood. i aim to make 2 ton of compost a year, ive yet to hit that target but ive had over a ton this year.
i got quite a bit back from laying out the chooks run with a thick layer of straw, let them dig it in and decompose it, add more, do the process again , then let it mature a bit and shovel it up, mixed in with compost its great.