Can i add my convicts to my 75G?

#1
I am wondering if i can move my convict pair into my 75G? Cause i am wanting to use the 30G that they are in to either breed my keyholes or something else.
Here is the stocking
4 silver dollars
1 Nicarguensis cichlid male
4 stripped raphael catfish
4 halequin rasboras(will be moved to the 55G)
2 golden opaline gouramis

my male nicarguensis cichlid is about 6 1/2'' and i am gonna sell him soon, so i don't think that the cons will be bullied.