Oh boy I want to go fast

Not wanting to derail your thread but get your Duster on the road and enjoy it and be satisfied with it for awhile

X2

Get the dakota DD. But pocket cash and drive that car for a year and see where you're at. Do little, effective mods (chassis work is cheap if you got the tools & patience, and suspension upgrades aren't super costly). Home-made cal-trac's would go a long way in the direction you want to take with the car, for example.