That soil is way too dense and soggy. My rule of thumb with perlite is, "When it looks like there is too much, it's just right" You can barely see a few kernels on top. The perlite should be at least 30% of the total mix and *I* prefer closer to 40%.
Next time, forget the SS nonsense and the layering silliness and just make a decent organic mix and enjoy. There are a bunch of them in the organic forum stickys. Pick one that appeals to you. They are all very similar.
Listen to THG, she is spot on with the nutrients and things. No mix is going to go from start to finish, just like you can't make a 900 mile drive on 1 tank of gas. You're on the right track, just quit taking soil mix advice from Sub. LOL The ingredients used are good, but his amounts of those ingredients are totally wack.
Like lime. you should have 1 cup/cf (7.5 gallons), of mix. IIRC, SS calls for some very small amount that will have pretty much zero effect on pH and lead to pH problems.
HTH
DD