Personally, I am very much opposed to the quantification of power levels; by that system of classification, it all centres and focuses upon whether Character A's power number is greater than Character B's.
By that system, Middle Plane residents, regardless of the strength and virtue of their character, would stand no chance against anyone from Heaven or Hell on the sole basis that the latter was granted and assigned a higher power number, which completely defeats the purpose of RPing and storytelling in general.
For instance, the noblest and greatest hero on the Middle Plane you might evaluate as 400-500 at the maximum, which means that he would be obliterated within minutes by a "god", which is completely unfair and strips bare and conclusively kills any possibility of the finite and the humane, leaving space for nothing but competing detached divinities.
However, to suit your paradigm, I will propose the following to provide a comparative basis:
Regular Form of the Archangel - Slightly greater than 700
True Form of the Archangel - 870
Solraegiel - 990 (He would be the first to say that he is not actually a god, but for most, there is no difference)
Further, if you insist on maintaining these quantified power levels, then I will insist that they not be the sole, or even most important factor in determining the actual strength of the character.
Of course, to reiterate, I would rather that they not be implemented at all to begin with.
I approve of your solution to end the duel between Emparael and Bloodshadow though.