Seems like things are progressing nicely. I've been away for a few days or I would have chimed in earlier. It is very possible to bake a nice, light 100% whole wheat pan loaf. I know, I've done it

I will post my recipe when I get home.
I'm not a big fan of additives like vital wheat gluten (which is what a lot of branded additives contain. I don't think they're necessary and can give the crumb a gummy quality.
You need to be a little careful with proofing (second rise) times when baking with 100% whole wheat. The bran acts as little razor blades, cutting the gluten strands that develop. This will cause the loaf to be dense. If you over proof your loaves the razor blades have a field day. I like to test by feel, as Panini suggested. For proof testing, poke the risen loaf gently with your finger. If the dough sprongs right back, it's not ready. If it takes a few seconds to come back you should be good to go. If it stays deflated, you may have over proofed. I tend to start testing 15-20 minutes before a recipe says it should be ready.
I'll post the recipe tonight.
Kyle