Let me get straight to the questions:
1-)What kind of ATX PSU should I get to use the following without any problems?
Amiga4000T
CyberstormPPC 604e-233 / 68060-50 / 4x32MB 60ns RAMS
120GB Seagate IDE with ACARD SCSIDE converter connected to CyberstormPPC
2 newish SCSI harddrives with 80pin to 68pin converters connected to CyberstormPPC
a CD or DVD writer connected to CyberstormPPC or IDE.
CyberVisionPPC
VLab Motion
Toccata Sound Card
1 or maybe 2 1.76mb floppy drives.
A Deneb if I can find one.
2) These are other stuff I'll keep but not connect to A4000T. I will not install these with other stuff. Maybe I'll get an A4000D to use with these.
*Video Toaster 4000
*Video Toaster Flyer (probably will not install this with other stuff)
*3 newish SCSI harddrives with 80pin to 50pin converters connected to Flyer
3) These are the other stuff I'll get and use:
IndivisionAGA MK2
FastATA4000 MKV (not sure about this since it's not DMA)
Now what kind of ATX PSU should I get for this? I already bought one of these:
https://amigakit.leamancomputing.com/catalog/product_info.php?products_id=306"Converts 20-pin standard ATX connector to P8 and P9 AT standard power connectors."
I'll probably get an expensive high quality one.
I'll also get a UPS to be on the safe side. I guess there is no reason not to use one with an Amiga?