Cool. From what I've read, they're fun fish to keep. I'm going to be getting a longnosed hawkfish, too, when my 55 is ready -- along with a fuzzy dwarf lion and SFE.
Every compatibility( sp?) list I have ever seen lists eels and hawkfish as incompatible. Let me know how it goes if you get one. I wouldn't mind putting one in my 55 with my eel.