I had a Volitans years ago that I really enjoyed. I had to work with it for several weeks at first to get it to take dried/dead food. Its staple became the large freeze dried krill you can buy at most LFS. I supplemented this with all sorts of fresh fish, shrimp, scallops and other seafood.
One thing to consider is your water quality. These fish eat a lot of big meaty items which means they also generate a lot of waste. I had a fish only tank at the time so it wasn't an issue.
I would also have to entice my fish to eat dead/dried food sometimes. Not a problem for me. When I went on vacation however it was somewhat of a challenge however to convince my neighbor to stick his arm in with my venomous fish and wave food around until it ate.
Just a few things to consider. I really enjoyed my Lionfish when I had one but it took a little more maintenance than your average small reef fish. One of the dwarfs may be a little less messy than a Volitans.