Anytime you use the clutch like that it's hard on the bike.
If you slip the clutch, most of the abuse will be to the plates, friction and steel.
If you pop the clutch, it is alot more stress on the drive train, and at minimum the plates start chewing up the sides of the clutch basket.
Throttling up a wheelie like you said works just fine, not say it isn't hard on the sprockets and chain, output shaft, ect.
When you throttle the wheelie up, nail it, open it up fast. Stand up into the bike as the front raises, you and the bike kinda meet in the middle. Now, instead of just riding the power until you run out of rpm's, and drop the front, do this; as the front is quickly lifting, slowly and easily roll back out of the throttle some.
So that when the bike gets to 10 or 11 o'clock you have some rpm's left to play with. This also slows down how fast the front is coming up.
Instead of just wide open all the way, it's wide open to get the lifting momentum you need. Then closing the throttle some so you can "catch" the bike where you want it, it not loop you, and you still have rpm's to control it.
Since your not on the rev limiter, and assuming you and the bike are now balanced, you can ride there for as long as you like. A mile or more is no problem in 1st or 2nd.
Rolling the throttle on in 1-3 gears will lift her front end up in the air....... Just noticed you own the black model, trade her in for a white model they wheelie much easier.
