I too have an 01 F4I. I have been riding for about 6 weeks, and at 3 weeks also starting doing wheelies. I have NOT gone 145mph though, that is way too fast on 2 wheels. I did however get on the freeway on my first day out, fastest i've been is about 116mph(speedohealer recall) There are some things I need to practice and work on. But for a somewhat skilled driver/rider. IT is easy to hop on a 600 CC bike and blast around and think that you got it all. Some people just don't have the aptitude for riding/driving high performance machines, and are submisive sheep on the street and are scared. You may not be one of those people, but you must realize how squidly you sound asking how to do wheelies, and talking about doing 150mph.
If you have the stock sprockets 1st gear wheelies are gonna be the easiest to do. Once you go down a tooth in the front and up in the back, 1st gear is going to be wicked. Real easy to flip over with too much throttle. Second gear is much more controllable, however you will be going much faster. I don't even mess with first gear anymore after I changed sprockets and chain, it is too violent and I almost flew off the bike a few times!! Second gear is much smoother. However some days I just won't do it great, and I will realize its just not the day to try and do wheelies if I get that feeling. DO NOT force wheelies, just go with teh flow, you have to practice but if your not feeling it, don't insist on trying harder. Just wait another day. Right now I kinda cooled out on them after a day of fumbling with them. I'd rather go hit the twisties. much funner.
The main thing in doing the wheelie is clutching it. Just use ONE finger on the clutch, preferably your pointer finger. IT has to be smooth, your gonna gas the throttle and smoothly pop the clutch. The key is don't do anyting violent. Practice by starting low, don't gun the throttle too hard, and don't hit the clutch too hard, till you have a hang of it. Its all about being smooth. Once you go up, try not to get "too" scared cuz if you let off the throttle too fast your gonna slam the front down hard, but if you have to, let go of that throttle. The rear brake is the easiest way to bring it down, and your foot should be covering it all the time. Also start the wheelie by pushing yoru butt back some, so when you go up, you don't slide down too far and scare yourself.
Really though, you should slow down and think before you do retarded shit. Keep conscious and aware and don't get caught up in the moment. Its hard but you have to, this is serious shit. Hopefully you get some of this stupid stuff out of your system and grow up and be able to llok back and realize how dumb you were and how you've matured. Hopefully you don't kill yourself first.
Here is a bad picture of a second gear wheelie I did about 2 weeks ago;
Just keep a straight head on. You should wait to do wheelies, and don't fool yourself thinking doing 150mph means you ahve some skill. I did 100mph on the freeway My FIRST day ever riding, that doesn't make me a hero, just dumb. I don't blame you though, we all think our shit don't stink, until we learn better and take a look back. Just be carefull. If you insist on trying wheelies do it in a parking lot, and make sure to wear gear. If you haven't already seen video of people crashing doing low speed wheelies. IT TOTALS YOUR BIKE. Your bike will hit on every corner and damage everything on it. And you will be hurt, possibly severing your ankle off.