Hi,
I am new to posting on this forum but have been lurking here daily for over a year. I have read all of Bryan's reviews relevant to what I am considering, but would like some input/opinions on my next lens purchase. I currently own a 7D and the following lenses: EF-S 17-55mm f/2.8 IS; EF 70-300 f/4-5.6 L IS; and the nifty fifty. I plan to purchase the 5D III over the next year, so I don't want to buy any more EF-S lenses. I shoot everything: portraits, family events, landscapes, birds and animals.
I love the 70-300L and bought it instead of the EF 70-200mm f/2.8L IS II, after a trip to S. Africa and Namibia last year, because I wanted the additional reach, and thought it would be more useful to me than the wider aperture. I was wrong! I find that I need both so am now considering buying a lens with high IQ with some reach but good in low light, i.e for photos of my daughter's wedding in December. So I am asking for advice on what to purchase.
Options considering:
sell 70-300L buy 70-200 f2.8L IS II and buy extender or
add EF 100mm f/2.8L IS or
add EF 85mm f/1.2L II (this is probably not long enough) or
just keep what I have and add 70-200 f2.8L IS II (but this seems like too much overlap)

I would appreciate any advice offered. Thank you