You should choose between coco OR soil. There's nothing wrong with running coco. There's actually much to like about running coco. Likewise, with soil ... either medium alone is fine. When you begin mixing it is when you start asking for trouble.
In your case, looking at your buds/flowers, you'll get more weight with soil than you are right now ... and probably even more weight with coco than you would using soil alone. Either way, your yield will improve by using either coco or soil.