Wait for Rich Dreher's latest, if you can. I've had a IIGS sitting for a while now just waiting to put his latest card in it. I'm guessing it'll cost around $120 or so but I suspect it'll be worth it and it's almost a completed project.
Yeah, with how expensive SCSI cards are, I think I'll be looking at a CF card instead. Pair that with localtalk bridging on the SE/30 and I think I'm set.