Vadimshevchuk

I am setting up a 10 gallon red cherry shrimp only.
Substrates in mind-

1 eco complete (have it in my 29 gallon and i love it... easy to work with)
2 Soil (nervous about the amonia spikes when rescaping or shrimp digging.)
3 Seachems oynx sand ( my waters ph is 7.6 and my kh is very hard. this will rise it a little)
4 regular gravel- Not to sure about this one since its boring

I want a dark substrate but a sand type one and a dark substrate also. I was thinking of caping the soil with a 1" on sand on top... The el natural method type thing since my tank gets 2 hours of sun each day. Any ideas or comments or tips or critisism is all welcomed. =D