You could do that or you could just simply sub in an RE movement instead of that plyo day they have you do. If you aren't on the third version then I am assuming you only have 1 lower day a week. You could do what you described or you simply can add the second day like a full WSB split would have you do. It all depends on what you can handle without overreaching. Basically you will have to try it out and see how you respond to determine the answer to your question.