doubling your number of shocks isn't going to help that any.
The problem is when you crank the torsion bar keys you rotate the lower control arm down.
When you do this, you effectively shorten the lever arm that is acting on the torsion bar.
Result: stiffer ride.
All doubling the shocks are going to do in your case is make the ride stiffer. IE: you're going to double the compression damping.
There is benefit to double shocks with heavy tires in rebound damping, but that's a different issue than what you're talking about.
If you want a "cushier" ride again, you need to get a bigger drop kit for the front IFS to return things back closer to stock geometry. IFS is pretty picky about these types of things.
Or, as others have stated, swap over to a solid front axle.
Here's a bit of trivia most never knew: Back in the 80's when multiple shocks were "the thing" most trucks had one functional shock and the rest were "dummies". IE: they drilled a hole int hem and released the oil/nitro. multiple shocks made them ride like buckboards due to the stiffness the compression and rebound damping all those shocks added.
Cheers