Christmas island trigger isn't a bad option. No triggers are truly reef safe but if you feel that you have the skills to cope with the damage that it may possibly cause then I say go ahead. Bluejaw, crosshatch, pink tail, and sargassum are widely regarded as the best bets. Heck, I do all kinds of crazy things in my reef tank... angelfish, steene's pseudochromis, 25+ fish in a 120g tank, 10-12 of those are wrasses... the only difference is that I feel that my husbandry skills are up to the challenge and all of my risks are well calculated. Some have paid off and some haven't but I have learned something from every step!