I think one of the continuing problems with the supra/infra debate is that we are finite and God is infinite. It is actually illogical and irrelevant to argue supra/infra because God is not limited to thinking sequentially as we are. We talk of the "logical order" of the decrees, but it is actually illogical because to speak of them chronologically is to immediately invalidate their application to God. God does not exist within the confines of "time." To say that "God decreed this first," or "God decreed that first," is to limit God to chronological, sequential reasoning, such as man is limited. By the very nature of God's omniscience, omnipotence, and sovereignty, it is irrational to consider any of the acts of his will as conditional in any way. So to argue that A must first happen before B is to say that God must first do this before he can do that. God could do that at any time if he so pleased.
That being said, I have adopted the supra label because of a few of its implications, viz. active election and active reprobation, and the implicit unconditional nature of election. However, I take no stand on the "logical order" of the decrees because there is no "logical" order to them. In fact, it is erroneous to even speak of God's decree as plural, as the whole of creation, election, redemption, and glorification is complete and consistent, therefore comprising only a single decree. And, of course, it is irrational to inquire of the logical order of God's decree (singular).
Soli Deo Gloria
Jon