"Considering this is a hobby project where cards are being assembled by a couple of people"
exactly , this is big pain-problem Amiga computer !!
like I remember from half 90 years non-stop is the same problem , hobby project and wait wait wait for nothing
ppc shark vel sonnet crescendo 7200 super great card , but where are this card for buy ? :-)
the same problem for twenty year
and this is main reason why Amiga died
always have to wait for nothing
vampire should be now get for big production ! for many waiting people for that hardware
