Hi Trey,
It sounds like you have only sailed the boat in light winds so far.
Go sail it in stronger winds and on one hull. Sail to windward and close reaching. Take note of the amount of hull height/volume above the waterline at the bow. This is reserve hull volume. This reserve hull volume is the hull volume that will keep the boat from pitchpoling with the spinnaker. If the reserve bow height is only a couple of inches, then forget the spinnaker. On the other hand if it is 6ins to 8ins or more, then the boat might be able to carry a spinnaker. Think of reserve bow height as reserve horsepower. More reserve bow height means the boat/rig can be driven harder by more sail thrust and the boat will go faster. You don't want to end up like that picture on the front page of Catsailor Magazine at this time.
Bill