Nice thing about IMF is that you can keep your "nightowl" schedule. Using the more lax version of 16/8 (8 hour feeding window), you could use a feeding window of 2pm-10pm. I had a similar schedule back when I was a night owl but the wife didn't like it much. I've since moved to 18/6 with a feeding window of 12pm-6pm. I did it mostly for weight and fitness but absolutely noticed the sleep benefits, which I initially attributed to exercise.

I'm definitely a night owl who sleeps around that time (usually around 1-2am but sometimes even later) and IF with an eight hour eating window between 12pm-8pm is really easy to do.

I usually start eating around 12:30pm and finish eating around 7pm but to me the occasional dinner that goes until 9pm is not a big deal. You get used to it after a few weeks. In fact it feels really weird to eat before sleep once you get used to IF.