Hey jack, (I know it's ninjajack, but the ninja was invisible) ba-da-tss!
From my perspective, it looks like your long range lenses are fairly well covered. I would second the 17-40L. I use this lens and *almost* every gig for the ultra wide angle effect that it gives. Given the barrel distortion is horrid if you're up close and personal with someone, however, it looks like it would be a good fit.
I shoot a full/crop combo and love it! I also shoot a 60D/7D combo for the crop action, but the 5Dii/7D combo gets used 94% of the time and the 60D ~6% of the time. I would not worry so much about getting a 70D and focus more on a full frame. My guess would be that the 7Dii will cost ~$1,799 and the 70D is at $1,200 which totals $3K. Black Friday, (and several other days if you watch closely enough), will have the 5Diii at ~$2,500, cha-ching! you just 'saved' $500 by choosing this method of upgrading. If you sell the 60D, then you now have enough 'saved' money to purchase your new glass. Happy shopping!
I hope this helps,