How do I install this application on my MacBook after I already canceled an installation?

Yesterday I started doing a custom install of my brand-new copy of Logic Studio on my MacBook Pro. After 2 or 3 of the 8 discs had finished, I decided (perhaps foolishly) that I wanted to watch a DVD before the installation finished. So I clicked “cancel” and stopped the process. (In retrospect, I wish I hadn’t done this, but we can’t change the past.)

When I re-insert the first CD now, it doesn’t seem to remember that the installation has been partially done already. So I would like to do the whole thing over. But won’t that mean I’ll awkwardly have a duplicate of lots of the files?

If the answer is “Just delete all the installed files and start over,” my concern is that the files might be scattered throughout my computer and difficult to find.

So, what do I do now?

(By the way, I tried Googling and couldn’t find an answer. Apple’s support line is closed for the weekend.)