I spoke to a distributor for BC and, based on their replies, and the fact that I despise the fact that my F30 looks like it is walking around on stilts, I suppose that's the way I'll go.
Truthfully, though, as I doubt I would be swapping the ride-height any, coilovers seem like overkill but I don't want to purchase just springs, either, and I'm unable to find F30 shocks...