I'd add carboload but that's it honestly. I'm not super great with exact percentages but like 50% coco completely flushed and neutral mixed with 25%peat, 25% coco. Check out the website on some the soils I named and see if any give better percentages
I guess they no longer make carboload and replaced it with bud candy,right?
And the soil mix you said means 75% coco and 25% peat moss, right?