Rensselaer Candidate's Choice App-Advantages?

<p>Are there any advantages to using Rensselaer's Candidate's Choice Application if you already have everything done on their CommonApp besides the supplement? I've had their school paid for and all the recommendations and school reports done for them through the CommonApp, so is it more worth it to use the CommonApp? And if I use the Candidate's Choice Application, can they use the recommendations, money, and secondary school report that I have already sent through the CommonApp?</p>