Don't get a Nikkor 24mm f/2.0. Never got sharp images with it.
I'd get a Nikkor 28mm and a Nikkor 50mm. Sure you can get them cheap enough used.
You don't need the 28mm f/1.4. The 50 f/1.4 is worth having if you have a few extra dollars, but the 1.8 is excellent.
Some day down the road you can add a 20mm and a 200mm.
My two cents.