Hi Hugo. Glad to hear the changes are working. For your second question. I think nr. 1 and nr. 4 should be good with your orders and the changes.
You can also try to play these 2 formations with attacking mode. If you are stronger or if you are sure to have +15 give it a try.
And what cody say the 4-3n-2w-1 is pretty good formation that i like to play too.

Good luck for you