What USDA zone is the property and when is the first freeze normally? There was a thread recently with a similar situation. Someone asking what should be planted in a newly cleared field. Travis suggested rye grass seed, which is cheap and grows quickly. Other options are winter wheat, oats, winter clover, or a mix of brassicas.
I would not rake up the chips at this stage. I would throw cheap seed out before a hard rain and let the seed settle through the chips to the soil. I always like the idea of biochar, as I think it last longer in the soil, but it will require gathering it, charring it, and rebroadcasting it. That is a lot of work when the chips will do a lot of the same, with no work; but are consumable over a period of years. Biochar works best when one has large format waste they need to break down or dispose; not when needs a lot of handling.
Use a small seed. broadcast it before a good rain. Hope for the best; and get a green cover in for the winter. If winters are short or mild, you might try a larger format seed and disking it into the soil, but I have not had a lot of experience with disking. Not sure how it would work with heavy shred on the ground. Either way, something is better than nothing, but I would not put a ton of money into seed for now.
Here is the previous discussion: Permies thread