Thanks, VV! I look forward to kicking Batman's ass alongside these diabolical men and women.
I would be extra careful and thoughtfull to make sure we win. Remember that we operate in comix book "logic" where even the best laid plans of our villains got ruined easily by "heroes", thus I believe we should make plans that benefit us even WHEN ruined by "heroes". For example Batman seems to be able to easily prepare for everything and is an expert detective, thus I believe that we as a team should learn to cooperate with each other.
Remember that Superman is his buddy and might "accidentally" appear out of nowhere to save his bacon.
Thus I believe that we should be extra cautious, better to overestimate enemy's abilities and attack him from many angles than suffer defeat, again.
For example, if we will take Batman on the plate first: I believe that best would be stage some robberies or other crimes by expendable thugs to observe/tail him. I wonder how he'll react for kidnapping of Alfred ? Would he exchange, like everything, for his closest family ?
I know that I'm nagging, and sound paranoid, but better to prepare that luck is on His side. We just have lack of morals, ruthlessness and our wits to overpower the "fate" of a hero.