James Duff has been out there in the off-road world a lot longer than a lot of late-comers and has a very reliable line of products.
Some guys don't care for their shock absorbers, but that is personal choice. Their springs are also sort of stiff, but again, personal choice. Otherwise, their stuff is built heavy and will take abuse much better than Rough Country, Tuff Country, etc.
You might also want to check out BDS, by the way -- lifetime warranty on all their stuff - even springs. Hard to beat that. Both of my kids work in off-road shops and have done a ton of BDS installs. Stuff is solid and it works.
For TTB bushings, I like poly. The TTB arms only need to move up and down, so poly is a good choice. Duff is as good as anyone, but like was said above, MOOG and others are just as good.
Stick with rubber for the radius arm mounts though. They have to move against the bushings, not just twist in line with them. The poly ones are OK for street use, but limit flex off-road. Rubber moves better there as it can squish - and worn out rubber is best for max travel...
The design of Ford's radius arm front end makes the arms act like a huge sway bar when they are tightened up with poly bushings. The tighter and harder the bushings are on the end of the radius arms, the less down travel you will have. I'm getting close to 18" on my carefully selected junk yard rubber parts.