Yeah, for the last few weeks I've been working on this myself ....
This is my attempt at it, using my originals - SimCity 1.0, patched to 1.2 through the Graphics Disks installs - added the Terrain Editor and Utils, plus all the bonus cities from each.
It's also cracked cleanly, so it saves now too..
https://eab.abime.net/zone/SimCityComplete.lha
Feel free to WHDLoad it if you want, but it works fine without needing it.