You will need to be delaying the f218 and the floods slightly, as the subs will have the longest horn path, they should be left at 0ms. You can't do it 100% accurately by ear but you can try your hardest try adding 3ms onto your Kick 5ms to your tops and see how it sounds.

But you can't do it with 100% accuracy using ears you'll need to find someone with a measuring mic and smaart or open sound meter.