lengthening radius rods?

Those eccentrics are the only adjustments for both caster and camber.
There isn't a lot of adjustment to be had with factory parts.
Here's what I would do in your case... I would first buy the special esoteric bolt kit that has under cut bolts which will gain some adjustment.
If the front end guy still can't get close to correct I would install the offset upper arm bushings which will provide even more adjustment.
I went with the under cut bolts first because they turn. The offset bushings come with instructions for install but without standing before and studying your set up I cant say if you need to follow those instructions or install them opposite the instructions . They dont.turn.