I would recommend using epoxy for the stabs an cowl tabs. The cowl tabs will see a lot of vibration, and the stabs are not an area you want to worry about and think, "I hope that stuff'll hold." IMHO, its worth the fraction of an ounce weight penalty for piece of mind. Being an ARF, the best way to cut weight is in the components.

BTW, the reason gray beard asked if it was an ARF is because this is the kit forum, and it wasn't clear that you were referring to an ARF.