Help Choosing Tank mates :(

I work at Midway, and within the past two weeks someone brought in a 9-ish inch Blue Line Grouper... I tried to convince my boss to put him in with the Volitan Lion we have in back who is about 12 inches but isn't going for it yet. If he doesn't put him back there or go within a week I may just take him home because no one wants anything to do with him, He looks really cool and i haven't done a saltwater tank above 30 gallons yet so I'm kind of excited . But I don't want just a Blue Line in a big tank, does anyone know of some good tank mates for him and possibly where to get them. Anyone locally??

Here is a compatability chart
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Found in the information center box on the live aquaria website
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Here is also their info on the grouper
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Also Indoor Reef is in Tacoma
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There is also Barrier Reef up here in Renton
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Thanks for all the links I already looked up quite a bit on them, heard they were really messy :/. Does anyone know from experience how aggressive they actually are?? And is indoor reef on 6th still around? I havent been there in ages love that shop. And when is barrier's next big sale? If anyone happens to know offhand.

Oh, hope its not too late for you, but Barrier's anniversary sale is today and tomorrow. Nov 13th & 14th