Two part question as I am on the point of starting the NFA process (at this point, building an SBR or two and picking up a suppressor or two):

1) I am debating going individual or trust. I understand the benefits of a trust (and would use HeavyD's services), but right now individual approval seems to be coming back markedly quicker than trust approval. Aside from the inheritance, etc. benefits of a trust, the individual transfer is now pretty much the same amount of work, so it seems.

2) I will probably be moving within the time that the ATF would have the paperwork. How does that change of address effect the speed with which the paperwork is processed? Would individual vs. trust transfer make the change of address process easier? Also, what to do about engraving if the address is changed?

I don't believe that a change of address on the trust matters. The ATF does not regulate trusts and the settlor is free to amend it as they see fit.

Your form is already submitted. Change your address as you see fit. Your dealer will be getting the approved form and you will pick it up from them. They know who you are already.