TweetI like it, I like the volume, I like the exercises, I like it period! It's so tough to know how one will respond to bis and tris...is it better to hit them seperate from chest and back or better to hit them together? It's totally personal so if it's works to do them together for you, then this is a great split and I'll explain why I feel this way. When you workout you release cortisol which is a catabolic hormone. By workoug out day after day after day this homrone releases more and more. Since you are taking a weight free day on Wednesday and then two on the weekend, you allow the body to get this hormone down. It's a good split. I do a four day split too but just combine different muscles....I'm weird like that. I do chest/bi, hams/delts/calves/abs, back/traps, quads/tris/abs/calves. I do mine this way so I can superset. Supersetting quads with triceps takes nothing away from the other muscle group so I can go at a quick pace. This allows me to keep my HR up in the fat burning zone for the entire workout. Supersetting chest and triceps though, would just cause both of them to get tired too quickly. But, following chest with triceps means they are already warmed up and you don't have to waste time with warm ups so that's a good time saver right there.
Good luck, I'm sure it will work great for you.