So, I finally got to run 1st Age through it's paces and it went well. However, as we made characters and played, where I had been leaning closer to Labyrinth Lord while translating it, I found myself leaning closer to 13th Age in actual play.
I'm probably going to be roughing out some additional classes in the next few weeks and hope to put together a PDF with 2nd and 3rd drafts of the original classes.
I realize what I really want is a game as streamlined as LL, but as interesting as 13th Age. I think I'm getting closer. I may post some of the characters we worked up, and you'll be able to see how the game is evolving.