I would go with mostly dead base rock but not lace rock. You might want to look into Hirocks.com and a few others.
As far as TBSW rock, personally I would avoid it for a couple of reasons, the area its is cultured in is too high in phosphates, and there are too many unwanted hitchickers such as isopods, aiptasia and potentially harmful crabs.
What makes live rock benificial is the surface area for bacteria. With dead base rock you will have no die off and a great home for future bacteria colonies.