First learn to hone on synthetics and produce repeatable shaving edges. Then move to naturals. If you mix the two you introduce a lot of variables and will encounter mush frustration trying to isolate a problem.
Most new honer problems are caused by a lack of a full or proper bevel set so start there. As said, with what you have now, you should be getting great shaves, adding more stones, especially Natural Stones to the mix will only create more unknowns. Look to your bevel set and technique, you cannot polish an edge, that does not exist. If you cannot shave off your edges, you have a problem.
Photos of your stones and razors will help in advising you.
Make sure your Chrome Oxide is razor quality.