I don't think 40 hp electric motor would be much smaller than 80 hp motor. Motor is only 9 kg and they claim to have the world's smallest inverter for 50-100 kW power ranges. I don't understand what you mean about capacity, more capacity is always more range, wether you're using 40 hp or 80 hp, don't think anyone has currently too much range.Is anyone using full 80HP except when hooning for the camera?
If it's not used or practicable then a redesign of the power output and battery capacity may be considered.