You are describing TAG multi-table strategy - KQo is a clear fold on 90% of table textures, in my game 1200 stack does qualify for ANY stealing/pot building on 25/50. 3rd depends hugely on your read of the other 1.5-2k stack - most of the time my range would be much tighter than you describe, but if run into my clone, I have to outplay him with situational pushes. Only time I would push AJ, AQo, and less than JJ is when I have a non-tight image.