bockman, you as the parent, are the best one to answer that question. depends on your kid and what level they are at mentally and physically. you would know the limits of your kid better then anyone else. heck, my boy wrestled every weekend and went to district his 1st yr when he was 5(4th place out of 4...lol) now he too is 7 and finishing his 3rd yr averaging 50 matches a yr. he just earned his way to state qualifier status through a 16 man bracket. he was the only 7yr old on the podium with the 8u's.
we are going to do freestyle this year because the extra time on the mat may help close the gap on some of the extraordinary competition at his age/wt.
so you see, who knows whats right or wrong since each kid is different. as I have stated before, we as parents and coaches can also be a determining factor in burning out a kid. not just by signing them up or sending them to the mat, but by how we support them in the type of emotional rollercoaster that only wrestling/combat sports puts them through.