Lord Commander Erus..

Ok, as everyone knows I love Blood Angels. I have always wanted to make a pre-heresy Company, and model or have Sanguinius modeled for me and everything for them. However... My question is.... Should I use the current codex or the traits system.. My reasoning is that the trauma of the Chapter after Sanguius died horribly altered their organization, tactics, and everything.

So my question is, what do you all think? Codex BA or traits for a pre-heresy company. This project is more for modeling and fluff than a killer game army though, so keep that in mind as well!