You could use the Cech's backup instead of Szceszny to free up a some money. I think in defense you are on the right track, the starting formation should (if possible) only include 2 wingbacks as defenders.
Why would I use Cech's backup?
He won't get any games making subs pointless.
Wait just read the rules. Your subs don't get any points if they're on the subs bench!?
I'v made a huge mistake gif