I'd go for the 85/1.8 and the 24-70/2.8
The EF 85/1.8 USM
is one of Canon's best prime lenses. It's also much smaller, lighter and cheaper than the 85/1.2L ISM. The f1.2 is obviously better for low light, but I suspect that's not really a problem for you. It can blur the background more, but the f1.8 isn't bad at that either.
The EF 24-70/2.8L USM
is a great lens for portrait work an an APS-C camera when the 85 is a bit too long, plus it's wide enough for group shots, even in a small room.