Best FC for Hummingbird V2 with NBD Motors?

Look up the quad you’re trying to recreate. It should show what fc it’s using. Or find one with the same mounting holes, amp rating. You should know what voltage, kv, amp draw etc. It’s not as complicated as it seems at first. They have diagrams online that can help with figuring it out. Sometimes it’s fun just to wing it. Worst case scenario, you have extra parts for a different build. I personally just buy then figure out builds later. Don’t forget to have fun with what you already have that’s flying.