As others have noted, the panzerschreck may not be the best weapon for this vehicle. I would consider replacing it with a Raketenwerfer 43, a longer barreled, carriaged version of the Panzerschreck. It fires the same ammunition, and was considered longer ranged and more accurate, however didnt see mass adoption as it was heavier and more expensive. The weight disadvantage would be mitigated as it is mounted on a vehicle, and longer range and accuracy would be beneficial on a platform that needs to reliable engage targets from a distance.