@lymang:
Congrats!

.
Regarding harddrive-controllers I would recommend one which also gives a memory-expansion like the
GVP HC+8 or the
C= A2091. The HC+8 would be the best one of those two as it can be expanded up to 8MB ram with quite-easy-to-find 1MB 30-pin simms compared to the A2091 which can be expanded up to 2MB in the form of sixteen 256kx4 dip chips.
Both of those are dma harddrive controllers and in the league of Zorro2 harddrive controllers, they are among the fastest. The HC+8 is as far as I know the fastest of all Zorro2 harddrive controllers as it can transfer data to the onboard fastram directly without accessing the Zorro2 bus.
Stay clear of the
C= A2090 as it doesnt follow any standards, have serious limitations and on top of that just works bad if you use anything else than xt harddrives.
/Patrik