Actually adjustable shocks are a good idea for you so you can adjust the setting softer for a nicer ride. I would avoid your off the shelf crap as no one here would know what type of ride to expect. I think a good option for you would by a set of KYB AGX. They offer a non adjustable GR2 but they are firmer than stock. That being said, anything will be a huge improvement over what you have now.