Looking for 4" of lift on my 79 F250 with the softest riding spring available for the front. I don't mind spending money on good dampers either.

Also - how harsh will the ride be on the rear with custom arched springs to remove the blocks. I'm looking to get rid of axle wrap. (I understand severly arched springs and "soft ride" don't belong in the same thread. )

 

If you want the best of both worlds, Contact http://www.deaverspring.com/ and have a Race pack made for your ride. You can do the same for the rear. They will use a giant spring pack for the front, so you will have to change your steering. Your stock steering will not clear a 12 plus leaf spring pack, so expect to make some changes.
That being said, Daver has the best springs in the industry, so with these you can achieve exactly what you are looking for.