I don’t think it’s a perfect fit, stylistically, but it definitely fits well enough to use. If you like [name]Evan[/name] then go for it! I think your kids names are wonderful, by the way.
I agree that it’s not a perfect fit but I think it does go great with your daughter’s names. Honestly, I liked some of the other names you were considering more (especially [name]Caleb[/name] and [name]Samuel[/name])… I think [name]Jack[/name] would go great, too. But if you love [name]Evan[/name] the most, I agree, go for it! It’s a great name and I don’t think worrying about how names fit together as sibsets matters more than loving the name.