BobF
I have my fingers crossed hoping RP doesn't get anywhere near CCC ... or that it at least installs with fully flexible options outside of it.
The CCC will be one way it will be delivered. Quoting a sentence from Rapture_Pro_Pre_Sale.rtf (which you download from your CW "my products" page) "We expect that Rapture Pro will be available to download using Cakewalk Command Center by the end of April 2015."
However, I suspect it will be also downloadable from your CW "my products" page as well. Therefore , this would be the chosen method if you wish to specify the install location(s).