canon does make some good lenses for aps-c but they don't really have a complete system. sigma does you can get
sigma 8-16 $600
sigma 18-35 $900
sigma 50-150 $1000
sigma 120-300 $3600 its a ff lens but seems better suited as an aps-c wildlife lens to me
that will get you a system that performs very well and is comparable to the system below
the aps-c system is wider, the ff longer on the tele end. the 200-400 has a built in extender getting you 560 f5.6 the sigma is 300 x 1.6=480 f2.8 and the ff system has better iso performance so the aps-c system uses faster lenses to help compensate for this.
all and all there are some advantages to the ff system but $14,300 worth?
dpr says that the raw files from the 70d and 6d are indistinguishable up to about iso 3200, the 70d has a better af system than the 6d so i think you have to use the 5diii as a comparison model for now, the 7dii will probably be more equal
I think there are a few mistakes in your analysis, even leaving aside problems with inconsistent autofocus. When you say that according to dpr "the raw files from the 70D and 6D are indistinguishable up to about ISO 3200", and assuming they do say such a thing (surely they don't) what exactly were they referring to? Noise? The various other factors we refer to as "image quality"? If so, I don't believe them and have seen nothing in any other review site to suggest that's true; my experience with recent Canon crop bodies and 5DII, 5DIII and 6D doesn't either. Whether the AF system of the 70D is better than that in the 6D rather depends on what you're shooting.
Anyway, one could as easily come up with a FF system that's vastly cheaper than the one you assembled, and I bet the resulting images would nevertheless be better than those created by your crop system (which would still be very good, of course):
6D - $1500-$1900 (depending on sales)
17-40L c. $800 (often much less)
Canon 24-105L c. $800 but even cheaper if bought as the 6D's kit lens
Canon 70-200 f4 IS (c. $1100 on sale) or 70-300L (c. $1300 on sale)
Canon 100-400L c. $1500 but often less on sale
The lenses you list for your FF selection may perform better still, but they're all Canon's most expensive in each category; if you're going to list them for FF, you might as well put them on your crop list too - they work on both, after all. If you insist on f2.8 lenses, feel free to substitute Tamron equivalents for 24-70 and 70-200; but note that, as others have explained, 2.8 on crop doesn't perform the same as 2.8 on FF. And the only reason why your Canon FF system doesn't go as wide as your Canon crop system is that for some reason you stayed with Canon for the FF system; Sigma makes a lens for FF that's exactly the same range as the 8-16....