@Rainbow Dutch: You're probably right. I do tend to work slowly though, and my concern was that the songs would probably come out months apart.
As for Luna, I know. I know. I know. There is more Luna music out there than just about any other kind of pony music.

It's just that I realized I had two really hot Luna tracks and decided to expand. It's sort of a history of Equestria sort of thing (with an emphasis on Luna), so Discord gets his own track, the Equestrian National Anthem, which I wrote almost a year ago, could get lumped in there for Celestia and Luna's coronation, I could take Rebuilding Our City which was on the Smile album and for clarity's sake, imply a bit more directly that it's about the founding of Canterlot (once a bit more time has passed), then I can round it off with my two really really Lunar tracks. So it won't really be an album where every single song is about Luna and Luna alone. It's sort of a way to frame some of the work I already have, and experiment with blending songs into one another.
As far as promotion goes, I do have an animator interested in making a short film PMV around one of the songs, and I'm kind of counting on that to help get the word out there about the music, but he's very busy, he's doing it on the side, and animation takes months, so for all I know his involvement will fall through completely. I was kind of hoping to time the album around the release of the toon once it was a bit more definite that it was going to happen.
Anyway, thanks for the advice.
-Sprocket