I start in second gear most of the time. First is much to short.
1st gear is a wee short for gettin' down the road in heavy traffic.
2nd gear gets movin' quiet nicely, my 3500 doesn't have a problem keeping up with traffic using 2nd.
My Dad ALWAYS uses 1st gear, I've driven behind him several times, the problem is, he gets a quick launch, traffic gets movin' then everybody nearly piles into the back of him, then he shifts to 2nd gear and leaves everybody behind.
I've nearly rear-ended him twice, and I've had people lock up their brakes to keep from hitting the back of him with his quick launch and pause.
With an HX-40, 18cm exh. housing, and improperly big injectors, smoke can be bad with a heavy foot and 2nd gear starts, real bad. 1st gear is no fun, as soon as the clutch is out, it needs to go back in for the 1-2 shift. So I have determined myself to take off slow in 2nd gear, and be light on the Go Pedal.
With an inhuman amount of torque at idle, 1st or 2nd gear starts unloaded shouldn't really make much of a difference. Just don't rev 'er up and let the clutch out. Idle her out until the clutch is fully engaged, then ease, or romp into it,, whatever your preference of driving style is.
Merrick Cummings Jr