Lower gravities mean higher hop utilization, so a late add will boost the IBU even more. 45-65 IBU is correct for the style and shouldn't be a problem.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk