Should I sell my 100 f/2.8 macro and/or 70-200 f/4 for 135L?

Don't get rid of anything and add the 85mm f/1.8 to your arsenal. It's fast, it's cheap, it's sharp, it's relatively compact.

The price of this lens is a drop in the bucket compared to your body and other lenses.

If you must get rid of something, then get rid of the 100mm macro if you don't shoot macro. But if money is that tight, it makes me wonder why anyone in such a situation would spend that kind of money on gear. There is excellent gear that could be had for much less $