From the specs, it appears that the Centennials aren't true deep cycles but are hybrid deep cycle/starting batteries. The clue is that the specs mention 1,000 Cold Cranking Amps.
There's a lot of info online about the differences but, unless you want it to double as a starting battery (typical for boats), true deep cycle batteries will perform better as dedicated house batteries. Here's one take on the subject: Differences Between Deep Cycle Batteries and Regular Batteries
The other issue is, if you're installing them inside your van, you'll need to go with AGM or gel cell batteries or a vented battery locker.