Don't get me wrong, it is a really nice project which I do recommend to people who don't want to go down the path of writing their own custom site maker... The single-binary formula allows hugo to offer a much better set of trade-offs than the competition.
But... if you can write your own, write your own. It is a glorious yak shave.
My only tip will be to avoid all dependencies like the plague. For stability and sanity.
The upshot... After over two years of using my dinky-ass handmade pandoc-usin' (not even parallelised) static site maker, I feel hugo is not even as fast as what I have.