Three days on and then one off? Might be a bit too much, I've done it before and had better results when I switched to 2 on one off. However, everyone is different.
So I take it that you are doing 6 days a week of lifting. If so that is a good split on the baody parts. My only suggestion would be to use the first three days heavy then the second three days light on repeat exercises. this will help prevent overtraining.
I'm a big believer in not doing chest and tris or back and bis on the same day. Some guys swear by it, claiming the pre-exhaustion really stimulates the smaller muscle groups. Personally, it doesn't work for me. Best thing to do is try it out and see how you like it. Good luck...