Your motherboard is not a good overclocking board, and I would not go above 4.2GHz.
The stock AMD cooler capability is not meant for overclocking, as the cooler is only designed to suffice the CPU's reference TDP.
TX3 EVO is a good CPU cooler, though if you can get a Hyper T4 as it would be much better.
"I want no bottlenecking in gaming"
There is ONLY a bottleneck if your CPU is a or close to 100% usage, if not there simply is no bottleneck with the processor. The CPU can't be throttling at a too high temperature also.