Hi there,
Wow, lots of questions! All are pretty simple, and we get them a lot too. I'll suggest marketing address them on our website, next time they update it. Out of curiosity, what forum is it?
So...where to begin? First, ideally you should set up the tank, and let it run at least 24 hours, then, shortly before you head off to the store for your first fish, add TSS to the tank. Within two hours, you should
add the fish. Our normal recommendation is to add one small fish per ten gallons of water. However, you CAN fully stock the tank, you just need to keep a close eye on it, and be sure to not complicate matters by overfeeding as well. We recommend this method for African cichlid tanks since it is best to fully stock such a tank from the beginning due to territorial issues. For a novice fish-keeper, we'd recommend the one small fish per ten gallons rule for the first two weeks. Within two weeks, TSS should have fully cycled the tank and they can start slowly adding more fish, one at a time.
In regards to ammonia products, yes, they kill TSS. Any type, whether a chloramines remover or detoxifier, etc, anything that says it locks up ammonia or removes ammonia. Do not add TSS for 24 hours after using such a product, and do not add such a product for at least 7 days after using TSS. The bacteria is housed in a special stabilized solution of ammonia, so if you remove/lock up the ammonia, you remove all of the food the bacteria require to live.
If you already have fish, and are having an ammonia issue, it is best to get the ammonia levels down to below 4.0. 4.0 and higher is just as toxic to TSS as it is to fish. While 2.0 -3.5 ppm ammonia may harm some of the TSS bacteria, it should still have some effect. You may want to do a second dose several days after adding the first one, if you are not seeing the results you want. Keep in mind, these are bacteria, not a chemical, so results are slow to see. Give the product at least 5-7 days.
seachem stability is a good one to use as well probably a bit more expensive 
