I run basically the same list, though with some adjustments ofc. I myself am not too keen on armnements on contemptors other than kheres assault cannons and graviton guns, though I guess if they do work for you then should use them. Furthermore I do like multimeltas on rhinos, as it adds multiple potential threats to enemy tanks, however rhinos do tend to get targeted more than not, then again, mine are full with either veterans or support squads.