Line selection on a Gloomis Cross Current

Hello everyone, I'll be getting a G loomis CrossCurrent a non glx 9' 8wt. I've picked out a line thats to my liking for coho fishing off the boat. Rio has the Outbound coldwater thats 330grains which is the WF8i/S6, I have been told the CrossCurrent is considerably softer than the GLX model. Would I be over loading the rod? would it be better to go with 7wt line?