No, ballast weight in our boats is sufficient around 1000lbs. You, as do I, have the in bow sac (IBS). The horseshoe shape ballast bag under bow seats. Just make sure that when you are filling the IBS bag, you go up front and open the vent to let air out of the sac. Otherwise you will see the front sac is full, tense, but its all air unless you release the air. I usually will remove one of the top plugs and let out air until I see water coming out and then replace the plug. Otherwise you loose a lot of weight. I find if the front hard tank and IBS are full, it is plenty of weight.

That being said, if I add another 600lbs of lead eventually, I would distribute the weight ~40/60, bow and stern.