I too have a A7N8X (Deluxe). Only the deluxe has the SATA, FireWire, SoundStorm, dual NICs, etc.
The initial incarnation of SATA doesn't allow for daisy chaining. I believe SATA 2 has this in its design. But then 1394/FireWire already supports daisy chaining.
If going with Via, skip the KT400 and stick with either the KT333 or KT400a.