Yes, it's definitely before War of the Realms. It probably is between Snowguard's annual and the relaunch, though that does present a continuity error, as Nadia's mental breakdown is the reason she's missing in Champions #5. She should've also missed the Beat the Devil arc if Unstoppable Wasp #5 is before Champions Vol 3 #1. But if Wasp #7 is after Champions #4, then the new Champions should've been at the party as well, and Miles shouldn't have been as he's currently avoiding Kamala. Clearly Zub and Whitley didn't discuss their plans properly.