Regarding the input DC level, in reality I changed the divider on the plus signal so that I get a VCC/2. Basically it should have been two 150K but I had to change the resistors to get this mid point as appears on the sketch///
I am not worried about the output dc voltage, I know I can remove it with a cap. The problem is that I am not able to locate this dc level consistently at say vcc/2 (or (vcc-1.5)/2) so that I can get the max swing without saturation...
Still the output DC voltage at zero input is not zero and can be something like 2-3V. .
Even if I am using a single input, where in this case the gain is only x1.5, it saturates way before the output signal reaches the rails boundaries.