Firm feel reinforcement plates worth it?

Are firm feel reinforcement plates worth using on the LCA and K frame, or is it just added dead weight?

Here is my plan,
Rubber LCA bushings, Rubber MOOG ecentric UCA rubber bushings, Urethane swaybar end links, and some form of adjustable strut bar on the front. Later down the road a dillinger lower radiator support bar installed. I dont know about torsion bars yet, and I dont know what I have in the car right now. The car does have disc brakes and 4.5 bolt pattern all around (its a 74 dart sport). Also, HD (the larger ones) tie rod setup. I just want to get the car in decent shape all around, so I figured this would be some good budget stuff to do.

So what about those reinforcement plates? I plan on cleaning up the arms and K member, tack welding them on, and bringing everything up to the local fab shop to have them weld it all together with some nice welding.

EDIT: Car is going to roll on 215/60 on stock cop wheels, 225/60 if I can make em fit.

Thanks,