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If you find on second hand market the R7 1700 wraith cooler get it
It will go nicely with the 1600 also, but that doesn't mean the 1600 doesn't come with a superb cooler.
It is the same cooler just without the LED lights. The 1600 already comes with one.
The 95W wraith cooler should be able to happily run the chip at 3.6 to 3.8ghz where voltage can be kept around 1.25 to 1.30v.
This would bring it on par to the 1600X which is a 95W rated chip.