Very stiff front suspension

What are you comparing the stiffness to? I would expect with all new components up front that it would be a good bit tighter, or stiffer, than it was. What do you have for a rear suspension? Does the rear have the same stiffness to it, or can you get some bouncing back there?

It is unclear to me from your description whether you have loosened up both sides (UCA's and torsion bar) or only the passenger side. If you've only done the one side, I would do them both.
C