I was able to get the Voodoo working in the Acer V12P motherboard, so since the V12P comes with an Acer case, it is the V12P that I will use in the build. The GLQuake benchmarks between the Acer and Batman board are the same. The Acer BIOS is a lot more customisable too.
As I don't normally do system build threads, I'll post a few photos here to wrap it up.
Hardware
Acer_Hardware.jpg
Acer V12P Motherboard
Acer_Motherboard_V12P.jpg
Inside the Acer Tower
Acer_Case_Inside.jpg
Front view of Acer Tower
Acer_Case_Outside.jpg
View of the Intel Batman's Revenge Premiere/PCI used for troubleshooting the 3dfx issue
Batmans_Revenge_Pentium.jpg
The Promise SATA150TX2plus was the only PCI hard drive controller I could get working on the Acer board. Promise Ultra100 or Ultra133 wouldn't detect hard drives when used on the Acer board (Batman board OK though). I could not get any all-in-one PCI 3D cards working on the Acer board, so I opted for a VirgeGX + Voodoo1. The VGA pass-through cable is lousy and I've ordered a thicker one. I'd like to try S3 Quake on the VirgeGX before putting the system away.
Next system I'll be working on is a socket 8, or socket 5 with direct-mapped cache. I'm considering using an AMD K5-200 in the socket 5, or an Evergreen Spectra upgrade module with a K6-III.
Plan your life wisely, you'll be dead before you know it.