Bunny proofing is a must if they will be given free roam time. The most important part with allowing any rabbit free roam is to start slowly. Initially, they should be confined to a roomy cage until they "own" their cage as their personal space and get used to their litter box ( a few days minimum). Then, when it is time to let them begin roaming, it should be done in a small area to start. An exercise pen can come in handy for that.
You mentioned getting rabbits (plural). Hopefully that means you are looking at a pair of rabbits that are already fixed and already bonded. That's the best way to go. I would not recommend getting a pair of babies. Never know if they will bond once hormones kick in, you'll have the added expense (possibly hundreds of dollars) of getting them spayed/neutered. Will need to deal with the mushy poo of babies (uneaten cecals), and the hormones which could cause aggression and spraying of urine (over you and/or your belongings). The worst of this would be if they don't bond once hormones kick in. Then you'd be stuck with two rabbits that have to be housed separately, exercised separately, fed separately, etc.
Back to the bunny proofing, already fixed rabbits are typically not as excessive in their destructive chewing as hormonal or baby rabbits. Each rabbit will be unique in how destructive it may be. Ones that are more destructive need more bunny proofing. It is just a matter of blocking off anything one doesn't want chewed. Sounds like you already have a start on bunny proofing ideas to start with. It's mostly a matter of observing and of trial & error for your particular bunnies.
