1. 70-200 2.8
It's gorgeous and is perfect for weddings and portraits. I know everyone says that, but there is a reason they say it. IT'S TRUE!!!!
24-70 is a range that's not flattering to people. I avoid it like the plague because for portraits and weddings it just doesn't set the subject apart.
I agree here. If I were you, I'd get the 70-200mm f/2.8L II IS lens first. I shoot with this lens on a 7D and 5D Mark III and before I bought the Mark III, I had the Mark II you have and the images were stunning, even in JPEG mode. I'd then save my money and either buy the 85mm f/1.2L (if you can afford it) or the 100mm f/2.0 (much cheaper). I would also recommend the 135mm f/2.0L but make that purchase in 3rd priority, as the 70-200mm will have you covered. My personal preference is the 85L and 135L combo, but if you shoot correctly, you could get by with one of the 100's. If you only buy one lens in the 85-135 range, buy the 100 f/2.8L. I also would urge you to keep your 24-105mm f/4L IS lens. That is a great, great walkaround lens, especially with the 5D Mark II. That would also eliminate your need to buy a dedicated 24-70 lens. If you really need a mid-focal length range in there, such as at 50mm, just use your 50 f/1.8 or upgrade to a 50 f/1.4 later when funds are available. You can really get a nice set of lenses here if you just prioritize what you need and when you need it.
1. 70-200mm f/2.8L II IS
2. 85L or 100 f/2.0 non-L (it has L-grade pictures, trust me! And great in low light!)
*If only one lens in the 85-135 range, then purchase either the 100mm f/2.8L or 100 f/2.0, either have advantages. You do not need both an 85 and 100 lens in my opinion.
4. Still might be a good idea to buy a 50 f/1.4 later
Keep your 24-105 lens!
It is ideal to have both the 85L and 135L and not a 100mm lens, but weigh your options/priorities. You may be more confused now, because you actually have a ton of options for what you want to do!
My opinion of course!