Just out of curiosity could you tell me the size of the board and what you are going to use it for?
I got a PicoITX and it's realy small, if I where you I would put the biggest HDDs possible in it, max out the ram then use it as a network storage device or a webserver and built a tiny case for it, using a picoPSU and just resolder it with a AT conector 
It is 7.75" x 4.75". I bought it about 2 years ago but haven't used it yet. I am going to try to install it internally in a 1541 drive case to have a whole computer in the 1541 drive. I will probably just use true MS-DOS, because it's main purpose will be for archiving with MNIB and an internal parallel connection to the 1541. I will also probably put 64HDD on it for the hell of it to use with my 128T, if I ever feel the need to. Installing it in a 1541 case will be tricky, but I have a plan...
This board has a Disk-On-Chip socket, which I will probably buy and use for the main OS. I will also get an IDE->CF adapter to be able to move files between the modified 1541, my PC and the 128T at will.
The biggest use will be MNIB for archiving old originals I have to G64. I have several hundred originals, many starting to fail. 1571s (like in my 128T) are very fincky and do not handle old failing disks well. An original 1541 handles old disks a lot better, so a lot better chance of being able to read failing disks.
I did originally chose an older socket 7 SBC for not just the price at the time, but the ability to run real DOS with full driver support.
