You could try one of the
Classic Workbench packs, they run nice with my PPC setup
CWB ADV SP is a very nice pack and will run nice and quick on your system.
Remember to copy all the nesessary 040 libs and install the WarpOS software & latest update.
I'd also suggest upgrading your Roms to 3.1, although these should work with the older roms there are many bug fixes and you'll have support for OS3.9 which would bring the most out of your setup, especially with WarpOS
Steve.