Now when you say RDL, do you mean Romanian deadlift? Are you doing it like this?
If you are good, if you're doing them from the floor, stop.
I would just do the romanian deadlifts on wednesday, and nix the other two days and see how that goes.
Other than that, I'd say it's a really solid balanced beginners program. Stick with that, and you'll be a happy guy.
Once you get your hips back in order, feel free to add in the RDL's, but go light and focus on proper form, if your back ever loses it's arch then you've gone too heavy.
Feel free to ask any other questions at all.
And also feel free to post videos of your form, I'd be interested in having a look, especially your squat.