Yep, sounds like murder-for-hire. Strangers don’t usually just randomly ambush and assassinate people at a time and location known in advance to their ex-wives...
This was a true ambush shooting meeting every criterion for Murder 1 including obvious aforethought and planning. The likely shooter will surely be happy to tell the whole tale in detail about the loving couple who paid him. All three look ;ike good Murder 1 candidates and it is a good bet that Fernandez at least, while his honey should as well, will get the death penalty.