Nice for an intro...
...but too repetitive for a song. If I were you I'd put two chromatic eighth/sixteenth notes going down after the fourth note in the progression. Also, this sounds familiar. I don't want to sound like "Oh, this whole song is bad change it all" or anything, but I'd make the chords a little different. There are quite a few songs that use these chords, and being different automatically gets you a better score with me.
I'm interested to see what you make out of this! PM me when you're done if you want my opinion on it.