What's the best suspension for Street Handling?

I am building my 72 Dart and am in the process of collecting parts for the suspension. I am looking to get the best handling suspension for the street. Maybe do a little autox if I ever get the chance. I have bought a set of 1.00" torsion bars, Magnumforce upper control arms (built in 3-5* caster), 17" Bullitt Wheels. I have been reading post and it looks like I should be going for a new set of leafs, a set of front/rear swaybars, new shocks and subframe connectors.
My questions are, what style leaf springs? What size sway bars? What shocks? And for subframe connectors, Should I go with the homemade 2x3" square stock welded to the subframes or the full welded to the floor connectors (like U.S. Car tool style)? Is there anything else recommended for great handling?