Regardless of the extent of the ammonia and nitrite issues, constant exposure will damage the fish over time. It will cut their lifespan down. All of the fish that were original to my tank died long before they should have. The difference between the fish I have now that are thriving, and my original fish, is that the ones I have now were never exposed to the problems and hardships of a fish-in cycle. I am sorry you are having a hard time in life, but is it right to torture the fish, just because you do not have the patience for a fishless cycle? There is no way to know how much longer you have in your cycle as different types of fish produce different levels of ammonia.There aren't any plecs or sharks now. And I surely hope the tigers will be there for much more than 6 months. The cycle will be complete in say two more weeks, then there wont be anymore ammonia or nitrate issues to such extent. Got hold of a government run water testing lab. Dont know whether they can do check on my aquarium water.
I would like to thank you for taking everyones advice into consideration. It's nice to see people who ask questions to the more experienced, and blow them off because you don't like the answer. Good luck with your tank