Well i got my test kit today..reading 1.0 ammonia nirite.0( little surpriaed by that but thats ok)
You won't start to see nitrates until the end of they cycle. The first half or so of the cycle is just building the bacteria that convert ammonia into nitrites and the second half you will start to see the nitrites converted into nitrates as this second kind of bacteria starts to colonize in your tank.
The smell is partly because of the shrimp breaking down in your tank as well as the high levels of ammonia in your water. Both do not smell great. I have found it is helpful to take the lid of (if you have one on the tank) and open up some windows at a time you are going to be out of the house for a couple hours. Airs things out a bit.
I was looking at the pictures of your rock work. Hard to tell from the pictures but it looked like you had your rock sitting on top of the sand. If this is the case you are going to want to make sure your rock sits on the bottom of the tank and the sand fills in around it. Rock on top of sand produces dead spots in the sand that can compress and become solid and cause problems down the road. Also if you end up getting any fish or inverts that move sand you set your self up for them moving the sand and your rocks becoming unstable.