absolutely not. Your configuration exceeds the capabilities of most gaming rigs. Your return on investment would not be very good. You should be fairly future proof for a while.
Not so sure if maximum quality is doable assuming 1080p just based off what we don't know about those games. But no, you do not need to upgrade because your computer is more than capable of running games at very high settings for a while.
absolutely not. Your configuration exceeds the capabilities of most gaming rigs. Your return on investment would not be very good. You should be fairly future proof for a while.