I finished playing through the 99-min version last night. Thank you kogami for all your hard work put into this. For someone like me who prefers the original voice acting, this was very enjoyable to play through. I hope in the future someone helps you translate the remaining Japanese script. =D>
For anyone who's complained in this thread about these discs not being optimised: that's a load of rubbish. The problem is not with kogami's optimisation, as he used the GD-ROM sort order. The problem is the *.mds/*.mdf format and Alcohol 120%. Either convert the images to *.cdi like I did, or download kogami's recently uploaded *.cdi version. Burn using IMGburn with the DiscJuggler plug-in.
I originally had the same laser grinding/read issues that have been reported by others, but after burning the *.cdi versions, everything reads smoothly, with the laser not working any harder than when reading the original GD-ROM.
As long as you have a burner compatible with 99-min discs, you should have no problem with this.