Bike is weak until warm

[Hotboy]

whats up fellas i gota 98 600 with 33,000 miles and DONT wanna take it to a shop unless i know the problem or cant fix myself. I start the bike with choke when engine is cold no matter what the weather, let it warm up to 150 on choke then I can ride. If i try to take off at 125 itll wanna die n run rough if i give it gas it may stall or be hesitant to rev up, at 120 i can turn the throttle a 1/4 and it will rise up some then jump to that appropriate mark after holding it there for moment. But when she is warm she responds great on the throttle when in neutral or riding. DONT KNOW IF IT HAD A VALVE ADJUSTMENT i put semi NEW 97 carbs on there with my 98 jets and it runs better than before. Dont know the symptoms of bad valve settings but with the engine warm it seems like I am missing the power that it should have. carbs are super clean I have ran in the past 2 months 3 cans of seafoam through it with no smoke, Carbs were in PERECT condition when i got them. I talked to a trustworthy mechanic i think and he priced me at $600+ for a valve adjustment but he promised at lest 15% more horsepower.
Anybody got this problem GSXR-FREAK whats do you think??? Does not have the power to pop a wheelie (DONT WANT TOO) in any gear, give you a good jerk thats about it. when i start it with the choke i have to let it idle with the choke or it will die till like 150 take it off choke and it will idle on its own, SOMEBODY HELP yalls input may save me $800 or so!!!!!!!!!!!!!!!!!!!!!!!!!!