If you can afford to, I'd recommend that you start off by replacing all the bushes you can find with Nolathane (or similar) ones. I am going to do this in both my (already lowered) cars, however I keep putting it off. It'd be heaps easier to just do it first and get it out of the way.
A good comfortable touring setup that also looks great is the setup I have in my VN. Much more comfortable than my VR, at least!! Better than any other (significantly) lowered car I've driven as well. King springs (super low) at each corner, matched with Koni adjustable shocks, front and rear. I threw in adjustable strut tops too, just for good measure. I drive at LEAST 25km on country roads each way every day, to anywhere, the setup is brilliant. Responds beautifully in any situation. It's honestly like a new car now, I'm so glad I did it.
Good luck with whatever you decide mate!!
Sam
http://forums.justcommodores.com.au/reckless-motorsport/42339-king-springs-190-set-4.html
That link might help you when it comes to springs.