Compatibility question

[Jeox]

I have a 7''+ queen conch, 2'' bullseye pistol shrimp, watchman tiger goby, spiny blue lobster, and a horseshoe crab ( who'll be getting his own coldwater tank soon)
All are about the same size other than he conch which totally dwarfs everything. None need to be in close contact with each other either.
Anyone forsee any problems in the near future?

 

[guppiman13]

the blue spiny lobster could cause problems in the future with other inverts and some fish

 

[skene]

I see it all as a problem. You need to stick with guppies.

 

[BIGgourami]

horsehoe crabs often die inexplicably..

lobster will eat pretty much everything else in time

the other three are fine though