well, i hold mine up around 10,000 - 12,000 rpms and have to slip the clutch while takeing off, you want to keep the RPM's up to get a good launch, if you rev it to high and dump the clutch, you may find yourself lieing on your back.
go off to some back road and practice launching first.
if your front wheel comes up, let off the throttle
my brother tryed launching his bike yesterday. hes a new rider. so he was trying it at 4 and 5000 RPM. the bike kept stalling right away. it will always do that when you try to launch at a lower RPM or was he doing something wrong?
his bike is brand new and he dosnt wanna rev it high yet, i know...he shouldnt be trying to laung it until after the break in. but its his bike, not mine...
i usually launch at around 10-12k ad lean over the tank ride the clutch out and make sure you plant you feet good before you do launch and when the front wheel usually comes up and your already over the tank just ride it out its not going to come up that high and will go back down when shifting i have mine geared 1- 2+ and only weigh around 180 and it hardley comes up just remember to slip the clutch also i drop tire pressure usually to like 26 or lower