Welcome to fishlore.
Don't know terribly much about lionfish. What I do know is that you are going to want to make sure your tank is set up the way you want it to be before you put the fish in. Make sure you have the
aquascaping down just right, make sure your powerheads and everything are all in the right place, etc... because once you put the fish in there, you're not going to want to have to move stuff around. I'd also suggest having a set of heavy duty, elbow-length gloves in case there is some emergency that requires you to reach into the tank.