Detail pictures of 1.5A

[VladoPortos]

Hello,
Finally PCB of 1.5a version arrived home :) do you have by any chance detailed pictures of the PCB with components ? I'm trying to figure out what is needed and what is not to be there. For example if I use the Adafruit RTC, I will not need to add anything to the RTC block on the oposite side right ? Same with CR1220 since the Adafruit have its own battery ( I think ). Also what is the I2C-1 on the Bottom side of the Adafruit RTC block ( checking the schema looks like the I2C-1 to 3 is for sensors) ? What is the IO17 ( SW 3V3) ?

If I'm going to use just 5V adapter ( or the DC/DC) is the rpi powered from pins ?

Sorry for so much questions, just want to make it right :D
Thanks.