You can make your eating windows whatever works best for you and your schedule. There’s no schedule that works better than another. The nice thing about IF is it’s flexible - do what fits you and your lifestyle.
As far as working out, I think you’ll be perfectly fine. I personally work out while fasting and have no side negative energy effects, as do plenty of people. The important thing is to listen to your body. It’ll take a few weeks to adjust to the fast because you’re stress your body out. But after that adjustment period, if you find you’re just absolutely exhausted during a workout and can’t keep up, try changing up your eating window or when you exercise. Do what makes you feel the best.