SkyCaptain and Outlaw are very much right. We really don't know you. Some guys here will say you need a million hours of dual-given before flying a Jet. Some will say you're ready if you can pass training. We're all just blowing smoke here, because we're all individuals, and what is good for me is not necessarily good for you. Only you can say if you're ready - at one million hours, or 390...
My advice? Do tons of homework...and take any advice you get on here with a grain of salt. We all have our own agenda's. Don't let yourself be talked into (or out of) something just because of some strongly-worded opinions.
Best of luck.