While I can't comment on the RBR, I did finish a complete Imperial Star Destroyer (one of the only ones that I was missing) a few months ago. I believe the only issue that you may come across with the set, like I did, was if you want it in old grey or new blue-grey. I was unable to find a comparison of the two, but I have also like how cleaner the blue-grey have looked and so I did the entire thing in blue-grey. There was only 4 pieces that have not been made in blue-grey, 2 boat pieces and 2 window pieces, everything else can be done with blue-grey. This was done all on Bricklink, roughly costing $600 (probably could of been cheaper via ebay but I did buy mostly brand new pieces and wanted to make sure it was all blue-grey, since if I recall correctly, LEGO only made the set in either all grey or 50/50 grey and blue-grey, not 100% blue-grey).
Also, Bricklink has it where you can create a list by putting in the set number. It will then break it apart and put each piece in their respective category. That was how I did it and it was fairly straighforward.
