SOC priority rule question

An SDC command overwrites previous command if referring to same path. Default multicycle of 1/0 is assumed unless overwritten. Similarly you can set a group of paths to any value then exclude some by overwriting in a next statement.

As to multicycle path being correct or not. That is difficult to judge from posts. The best thing is to see waveforms or even add test delay using after statement in a working testbench if practical or use timing simulation which would be too slow.