I'd just say that soap made with the Walmart shortening might have a shorter shelf life. I used to use it frequently but after about 3-4 months some batches would develop a rancid smell and DOS. Some of my batches never developed either but more than half had at least one or the other. I think it depends on how long the shortening sat in a warehouse or on the shelf. I switched it out by replacing half the amount in RSPO Certified palm and the other half of the amount in Shea Butter and haven't had the problem since. If you're not concerned about shelf life though, I think it looks fine, especially if it's just for your use. Don't be afraid to experiment. It's how you find out what works for you.