Omega 3's are the cornerstone of your fat intake. Fit them in to whatever your fat macros are. If you are bulking, and for instance doing a 30/40/30 p/c/f macros, then fit them into your 30% fats.
PB is a good fatty food, but there are better. Almonds, walnuts, etc. are better. Walnuts have the highest omega 3:6 ratio of any nut. Almonds are high in fiber, calcium, magnesium, potassium, vitamin E, and other antioxidants, and the fat is unsaturated, mostly mono.
For most, bulking is just that, never have an empty stomach, and many do not really follow macros other than adequate protein intake. If this is the case with you, then simply take them. When, other than pwo, is not really important on a bulk.