Use PgcDemux to demux the video and audio from the Dr M disc, and the chapter points (celltimes.txt) from the EditDroid disc. (You can try demuxing the EditDroid isolated score but I doubt it will sync up to the Dr M video.)
Now use Muxman to remux video and audio with the new chapter points.
Then use Vobblanker on the EditDroid disc to replace the main title Pgc with the one you've just created above.
That's basically all there is to it. You should be able to find tutorials at doom9.org or videohelp.com, or you could teach yourself by trial and error. Give it a go and post back if you get stuck.