Higher acceleration does mean more current, and that does mean more losses in the wire, but it is tiny in the scheme of things.

With higher acceleration, the higher current is there for a shorter time, so the "squared" part of I2R losses is negated. High acceleration is lossy, but less than you might think.

If you're after the biggest possible range, you might look at deceleration rather than acceleration. Regen is inefficient (though much better than not having it!) Winding losses, electronics losses, losses charging and discharging the battery, then losses accelerating again. The best thing to do is to spot that you have to slow down well in advance, then hold the throttle so that your power meter is at (or close to) zero. That way you're neither putting power in to the motor nor regenerating power from it. That's the most efficient way to slow down and will save you multiples of your acceleration losses.