What is the best unit combination to take out wall defense with the following setups. This would be attack while the defending player troops are hidden in Sanctuary.

13,000 Crossbow
6000 Spikes

13000 Crossbow
5000 Caltrops
2000 Spikes
500 Traps.

Looking for the best unit combination to take out wall defenses, looking for minimum unit loss. An actually Report would be great.

Thanks.