You intend to erase W10 and install Linux in its place?Note: Computer is MBP17 Late 2011 running OS X 10.11.4 & Boot Camp Windows 10, the later I intend to erase.
Your previous link http://www.rodsbooks.com/refind/installing.html which one to choose for OSX on the left panel ? could you elaborate a bit ?rEFInd installs in the OS X EFI folder. Linux will have it's own EFI folder in the partition it was installed. No need to delete anything in my opinion.
sometimes the "esp" name is "EFI". be carefull of that.
Download the refind file for OS X and follow the instruction of this video