Here's my opinion - Get the 6D + 85 1.8 instead.
One nice lens will get you exactly that, one nice lens. Whereas a body upgrade means all your existing lenses will benefit from it.
I just had a look at your recent uploads on flickr, when I view some of the photos in full size taken with the 135L, they are really suffering in terms of sharpness, fine details and tbh shots @ ISO100 still looks noisy.
Basically the body isn't doing the lens any justice.
The better the lens, the more demanding on a good body. Also more flaws will shown on a lesser body. Therefore it makes perfect sense to upgrade body before anymore lens imo.
I think glass before body still holds in general for someone with a rebel + kit lens. But once you acquire a few good lenses, a good body is imminent to bring out the best of your lenses.
Just another thought for you to think about 