UNITED YOU NEGOTIATE, DIVIDED YOU BEG.
You don't even have to negotiate... that has been done for you! Just stand firm and DEMAND what you are entitled to!
If you chaps crumble NOW, then the GA award, such as it is, will be worthless, and renegotiations for future raises will be unable to proceed, and the WHOLE industry will be dragged down.
Remember, ALL your next interviews will be conducted by pilots, and they WILL respect you for this.