Send me your email in a PM and i'll tell you how I got that finish, what paint i used and stuff. But i used car paint, the good thing is that u have a detailing gun and maybe a compressor. I did not have those but i used other stuff, you should be able to get it better than me if you use the same type of paints I used. Its long to explain in here, send me your email.
Have no idea what u call spray bomb, aerosol?
What i really dont know if you can clear the paint u have in there, probably u can. And since u have the paint already I would do a few changes only and wait for the best because I really dont know if the clear coat i used will work right in the paint u have, maybe it will.