Actually Gaco's 1.1 config should have most of the "very high" effects like the sun/moon light rays which only appear when a structure or tree is in the same direction with the sun/moon and the "very high" water effects are in it as well.
The easiest way to test it out is to just start it in DX10 with all settings on "very high" and compare it and if you have done it right you should see very little difference other than the framerate that is.
Responsible for DX10 "veryhigh" water waves:
e_water_ocean_fft = 1
e_water_tesselation_amount = 10
Responsible for sunrays visible once objects are in the line towards the sun:
r_sunshafts = 1
By the way, once you start the game in 64-bit, you don't need this line:
Texture streaming is disabled by default once the game is launched in 64-bit.