I was thinking of powering my newly acquired Tribute with an AXI 2212/34 and a 3cell 1500mAh battery pack from Kokam. This battery weighs 4 oz. as compared to 2.6 oz. for a 1200mAh pack. Is this a meaningful difference for this size airframe?
What's a good prop size for the 2212/34 with either a 1500 or 1200 pack size?

Thanks for any advice

my dad and a friend both have tributes and they both use the kokam 3cell 1500s. my dad started with a 2 cell, there doesnt seem to be a big difference in the weight, theres so much wing area on that plane.