Problem is that if you follow that strategy then it will likely never be as performant as if you did "Make It Fast, Make it work". So if you know that performance is a key factor to success then you should follow this path instead.

And by "make it fast, make it work", I mean benchmark first. Kind of like test first, you write the benchmark before the implementation and constantly look at how fast things runs, and ensues every single bit you add is fast.