I have got:
2 x 1DX
5DMKII
60D
24-70 L 2.8 II
70-200 L 2.8 II IS
24-105 L 4.0 IS
70-200 L 4.0 IS
17-40 L 4.0
100 2.8 L Macro
Difficult but nice question if you dont tell us what you want to shoot with. From what you have I think you shoot some action and general stuff, but thats just estimate. Further you have mostly zooms.
For me, i would sell dublicates. Sell 24-105 and one of the 70-200's. This gives you another 1500.-
now it depends what dou you want to do, or do yOU just want to have (yes thats legitime)
- I would replace the 17-40 by a 16-35
- I think the 5dii you need really seldom. If you need it often, the 5d3 is amazing.
- For Landscape and in citys the ts-e17 is really nice, the ts-e24 is even better optically, depends on the needs which is more useful
- For action a bigger tele (prime) might be nice
- For available light some fast primes may be nice, 24 1.4, 35 1.3, 50 1.4, 85 1.2
Thats all together far above yoour budget, its just to choose from