I agree with everything Quantum said, right on!
Also, once you memorize the RH part and practice it in the chord positions and play it with the LH playing RH chord position, put hands back together as written, but make sure you do it FAST, just a little bit at a time. Don't just practice the whole section slowly (of course you can play it if it's slow). Practice just one measure, or even just a few notes, as you put hands together. Make sure you do it fast though, just a little bit at a time, and then add the next beat or previous beat, etc.
Make sense?