i always felt like the money laundering was his biggest problem, so i would have done that diffreent, plus if you remember, he got arrested for money laundering he would have never had to go to new york for sosa if he wasnt arrested (the murder was in exchange for sosa getting the charged reduced "you may have to pay a big fine but no jail time")
and if you remember in the begining of the movie frank tells tony" your biggest problem is not going to be getting rid of the coke, but what to do with all the fucking cash" tony replies "well i hope i have that fucking problem one day"