Well, that should easily fit onto a single DVD.

That reminds me. An additional step sometimes required when combining discs into a single DVD, or splitting a DVD9 game into 2 DVD5s is to edit the installer to tell it where to find the files. This is very easy using a free utility called Orca. You just drag the installer file into it and get a load of properties that you can change. Selecting the Media section lists where the location of all the files to install are. You can edit the disc name for each file so the installer knows where to look. Very easy and useful. A bit like the old Amiga Assign command.