Although the eel and lion are "reef safe" I would not have them in my reef. Reef tanks require far better water quality then you are going to be able to maintain with those two in there. They are messy eaters and get kinda large. I would forgo both of them in that size tank.
It's not just the waste they produce. Its what you have to feed them. I'm not saying you can't do it, but if you want to maintain a reef system with corals having them will make it more of a challenge.