Once the bike has warmed up you should be seeing a stable rev count, but using the choke is normal with carbs. My Bonneville is so bad I can only start without choke after pulling over for petrol! I've been told rejetting can help but I don't care that much..
My wife's VStar 650 is carbureted, but I usually just choke it out and start riding. By the time I'm down the street a 1/2 mile or so it's all warmed up and ready to rock. Well, rock as well as it can with that little motor. heh