It looks like you can use it now, but the heat of it would not make plants happy around their
roots if you dig it in, so either leave it on top, or if mixed in, wait a week or so to plant so it will cool down.
If there's any recognizable pieces (of anything in a compost pile) then those can be sifted out and put in a pile that has layers of soil in it, to finish. Or at least toss the biggest pieces out of there and finish them separately.
If you want to use it all now, and leave chunks of wood in there, and if you mix it into the soil, the wood chunks will absorb
water that has nitrogen dissolved in it, so the first year the plants need extra nitrogen. After that, those chunks
should be broken down
enough to help improve the soil
An important distinction: Permaculture is not the same kind of gardening as organic gardening.
Mediterranean climate hugel trenches, fabuluous clay soil high in nutrients, self-watering containers with hugel layers, keyhole composting with low hugel raised beds, thick Back to Eden Wood chips mulch (distinguished from Bark chips), using as many native plants as possible....all drought tolerant.