To be frank, greens for power-training are best used at the start of season, typically in day 1 for core players, as reduced whites attributes after promotion could be more effectively trained and then further boosted with drills that mixed with greys. At the end of season, it is also very cheap in T to buy a few 1-3T players for finals if there is a real need.

With your super cup opponent, it is indeed weird to have the CL final opponent to be some 11% worse. You could stick with 4-5v-1 and then pull back both AML & AMR to create a containing 5-man midfield to outnumber the opponent’s diamond-4. Or 4-1-3-AML/R-1 to attack only 1 flank.