Congrats on your decision! The 70-200mm II is a great lens.
The 35mm f/1.4 and 85mm f/1.8 are two nice fast primes. Fast primes are nice indoors so out of these two, I would probably lean towards the 35mm.
The 1.4X III extender is also nice to have.
You should probably start off with what you picked first, and then see what focal range you use the most.
You still may want to get some protective filters, a bag, tripod, ball-head, or an external flash.