mm.. I am going with Very Good again.
I know many people think of Rock as a poor typing and think its needs more stats to make up for it, but I fear another Pokemon that is powerful enough that people who are not very experienced at dealing with it will think of as Uber..
Low Excellent would probably be ok but if we give it a relatively low BSR, like 400ish (Still more than quite a few OU's), and a good movepool (A few good 95BP moves, and a new Special Rock STAB) it does not need more power.
Rock may be poor defensively (other than SS boost) but as an attacking type it is quite good, and with speed it will not need to take too many hits.
Also Congrats darkie, think you will enter for TL of CaP 6?