hi as i am new to this forum i wish to first say hello!
triggers can be kept with other fish depending on decor and size of tank. but the most important deciding factor is the species.
if you have the pockets for it keep a TITAN trigger and a grouper or 2
want a nice "community" tank get a huma,niger or picasso and some larger tangs chevron or naso or even large angels
as for the inverts buy a couple hundred hermit crabs.... they wont all be victims. larger inverts wil do fine provided you keep your fish well fed
keep in mind this is what works for me and these are my opinions you dont have to agree-