In terms of fitting all the different types of session into a 7 day schedule, well you cant really - its probably better to think of all the various sessions as options rather than 'must dos' and to select what is most appropriate mix according to stage of training/target race etc. A bit like starting with all the potential ingredients that you could possibly put into a cake but you'd probably not include cherries if you wanted the target cake to look something like a Victoria Sponge. 
Or, using 14 day cycles, rather than 7, can mix things up with a bit more variety so you might use Tuesday for a track interval session one week and then the following week go and do some Kenyan Hills. There's no one way to get it right, but plenty concensus around on basic building blocks.
I'm planning something like this - a 2-week rotation where I hit LT and 10k pace in week A, and VO2 max and a progression run in week B. The ratio of week A to week B is 2:1.
Example, I'm planning on doing (in the 10 week build up), A, B, A, C (recovery week), A, B, A (10M race), C, A, taper.
That's a rough giude - there's some easier weeks where I add in a VO2 session here and there. If anyone's interested, I'm drawing up a table right now of the 10 week plan, which I can send if anyone wants to dissect it in detail.
Regarding quality:easy miles ratio, I'm looking at about 12-15% right now per week, on average.
Also, hi Zion