Hey Gario! Thanks a lot for the feedback. You're right I did go crazy with those compressors and limiters and now listening to the song again it does sound like it could do with some more mastering to get those sounds right. I'll update this post when the new version is ready!
Here's a little tutorial how on how you can rip instruments from Dos games for those who are interested:
For the original instruments in any dos game, you can rip them by pressing ctrl+alt+f7 in dosbox (0.72 not 0.74). That's gonna create a .dro file in the capture folder of dosbox. Then you get Dro Trimmer and you put the .dro file in its folder and run dro_split.exe your_file.dro. That's going to sepparate the song you capture into individual wav tracks. Also you can get dro2midi-1.6, put the .dro in it's folder and run this command:
dro2midi -s your_file.dro output_midi.mid >output.txt 2>&1
That's going to make a midi file of the song, a txt file and a lot of .sbi instruments.
The sbi instruments are the original dos format instruments of the song and you can drag and drop into JuceOPLVSTI which is a plugin for your DAW of choice that uses the dosbox OPL chip emulator.
in the txt file you can work out which sbi goes into which midi channel.
Then in your DAW you have to paste each corresponding midi channel into each instance of JuceOPLVST with each sbi. and then delete midi notes for each one as necessary as in the original song they don't play all the notes in a midi channel.