That's interesting this looks very similar to what I was planning, if you see my posts in the thread. I am also going to do FCS Tier 1 and use spun content for 'filler' and a manually created article w/link for the link like you said it looks more natural. Then SEREngines for tiers 2 and 3.
I am going to have my article directory links in with kitchen sink ones and use them to link/ index T1-3 but I am not going to care about article directories much in that it will only be a small portion of my kitchen sink links. I just hate them now, I'm sure they are still useful as indexers and to help create content relevant links for content targeting but they certainly don't pass any authority.
Your link strategy looks awesome especially with the high PR blogs that's quite useful I presume you are using expired domains or are they PBN's? Anyway I can't afford that yet but it's definitely something I will implement in future.
How are your rankings? What difficulty of keywords are you able to rank for?
Add me on skype - saberu1. I can let you know how my campaign goes and we can keep eachother updated about how our work is going.
It was nice to get your message.