i usually start at 9am-930am on domestics,never earlier.....some commercial i start at 8am-830am sometimes but i find im usually stuck in rush hour traffic leaving earlier....
also when ive ever tried to start domestics at 8am-830am lots of my customers are still in with vehicles in the way and i generally find it harder to find a parking spot on some work...
my default setting is 930am....i find this is the perfect time,roads are less busy and most customers have gone to work or out taking the kids to school...
i also like to have a large breakfast and a good 90-120 mins chill out time before i head out the door..