Take a look at the Undercover tonneau particularly their Flex folding cover. It looks similar to Bak folding tonno but with some minor improvements. It has a low profile design and features drainage tubes that help keep the inside of the truck bed dry during rainy days.
I like the Bak Roll-X cover. I found a nice price at 4 wheel online. It is a hard tonno that can be rolled up so that you can easily access the truck bed.
I like the Amp power steps because ground clearance will not be affected. I found a nice offer at truck accessories - 4wheelonline.com but I'm still undecided whether to get one or spend the money on other mods.