lens choices

I'm hopefully going to be getting a D750 in the near future. If this happens, I'll have $1200 to spend on glass. I already have a 50mm 1.8D and a Tokina 100mm macro. I'm thinking about getting the 85mm 1.8G, 35mm 2D, and the 24mm 2.8D. Having spent a couple of years with only the 50mm, I've come to like primes for the cost to performance ratio. My reasoning behind these choices is that they all have the IR focusing point on the lens, and none of them have reported hotspots in IR. My worry is that they won't be good enough for the D750. Also, does anybody here shoot video with any of the D series lenses? Any issues?

They will be more than fine with your D750 and you will take wonderful images. I personally prefer the D lenses over the G lenses. They have a more solid feel and as you mentioned a small DOF guage

Thanks. I couldn't see any reason they wouldn't be good, but I'd rather be sure.

I bought the 85mm f1.8 a few weeks ago and it's a fantastic lens on the D750.

Thanks @jimbro.

What I'm most interested in is the D series for video. Is the auto focus sufficient and quiet enough?

I just got a Tamron 70-200mm f2.8 for $1000 on Amazon. It's probably grey market for that price new, but it seems very promising so far!