you would be good with LPS
and softies , as for clams and anenomes they require stable tanks that are up for a year with out issues . Most prefer to say MH
for the clam and anenome but some folks have kept them under pc
sucessfully , and just suppliment thier feeding weekly.
That seems like a decient system ... As for the LR
you really do need it for cycling your tank properyly . It adds to the bio filtration as well as giving you the boost for your cycle , and gives your bio bacteria a place to grow and thrive