Unless planning Prime95/Cinebench marathons, you might be content with 68-72C gaming temps...
Or, you might be content with stock clocks, or, perhaps a somewhat more modest MCE enabled (all core turbo of 4.7 GHz) if that's an option on your mainboard, as 4.7 GHz and core voltage required to hit it are likely a full 35-45 watts less than the heat than 5 GHz...easily.
(Depending on your case's ability to accept a tall cooler, I'd also look fro Youtube comparisons of assorted AIOs compared to a Noctua NH-D15 with your CPU...