I have a vision, but it's blurry. I'm constantly going backwards to try and establish the meta-fictional groundwork. Like I just done tonite, by publishing a new version of the Introduction. I'm serious about this being less a novel than a long, long, stand-up comedy routine/lecture. But that's just me.
You want me to stop and read Heinlein now, GP? Aren't I already driving you nuts with my lack of productivity?
Don't assume I'm sober, GP. I rarely am when I'm on the internet. This is my party time, you know. Well, it's not all that drastic or drunken. Wanda knows to leave me alone once I log on, but she also knows that I'm easily distracted. Like right now. She can't get the Netflix to work so I gotta go deal with that. And if I can't get it to work for her then we'll hafta have sex with each other. Which, frankly, should only take me a couple of minutes. 
Duran Duran aren't as lame as we think they are. I'll leave it at that. God knows you don't need me writing another essay extolling another band's musical virtue!
So, I don't like the idea of going back and forth too much, either. I flat out don't like flashbacks. Unless they're anecdotal and neatly meld into the ongoing narrative. But when you're trying to tell a story that spans decades, like yours and mine do... What to do?
Personally, I've decided to utilize an overbearing narrator. ME. Meta-fictional John Hamler speaking frankly and straight to the reader's face. Yada, yada. How are you gonna do it, though? Because, like I said, I'm invested in the teenage Genesis now and for you to suddenly pull the rug out will kinda/sorta piss me off. I never read the Kite Runner so I'm curious. How did he do it?