Im with Bart on the "No 6x9's" Get two sets of components, mount them correctly to make the best of the sound they give, then get a sub.
Subs, and 6x9s are pointless, as the 6x9 is a bassy speaker, which IMO goes against the bass from a sub.
One or the other, but not both!
And if your looking for someone to tell you which to go for, I wont, that's down to a personal preference, and you make your own decisions, and learn from mistakes.
But i would never recommend 6x9's to anyone.
best install you can get, without going into silly money suround sound systems, and full refit and rebuild of the car's interior, is
Components fitted in footwell's pointing upwards, tweeters fitted dash level if poss, of footwell pointed up again. Components in the back, pointing upwards towards the rear screen, to bounce the sounds forward.
And a sub in the boot.
But you have to decide on what music you listen to most, before deciding on what speakers to get.