Jiuzhaigou

I plan 3 days in Jizhaigou, 1 day in Huanglong and 1 day horse trekking in Songpan. If Im not going to Songpan and spend my fourth day in Jizhaigou, what would you recommend me to do? I heard there's horse trekking around Zhongcha Tibetan village but I don't know if I'm going to fed up after too many days in Jizhaigou.

Any suggestions to spend 1 more full day near the park? I'm not interested in eco tour, it's far too expensive.