Using SDA and SCL with analog inputs at the same time
No. You can't. Not unless you could come up with some way of disconnecting one set of devices and connecting the other.

Instead you could add an I2C ADC chip to the existing SCL/SDA bus to expand the number of ADC channels you have available. Or use an analog MUX chip on one of the other ADC pins to expand the number of devices you could connect to it. Or you could add an SPI ADC chip to pins 10-13 (SPI bus) to give you more analog inputs.