I think if nothing else, the rocker panels would be a good idea.
If you do the nerfs, talk to the LineX guys about texture options. LineX can get a little slippery. I think the higher application pressure they use, the smoother the texture, and therefore the more slippery it can be. It's not bad by any means, but using it on the nerfs if they get used as a step, could present a safety concern.
I've also heard that LineX also has a new UV inhibitor that helps keep it from looking chalky like many of the spray-on liners can look after a while. I have my interior of my Bronco sprayed in LineX, and though it's exposed to the sun much of the time, it hasn't so far looked chalky. Dirty, but not chalky. It's about 5-6 years old now, without the new inhibitor, and is holding up well.
All in all, I love LineX.
SMB-less as of 02/04/2012. Our savings account is richer, but our adventures are poorer.