Chengdu During Golden Week 2016

Well, taking bullet train and coach are main transportation to get to many popular scenic areas nearby the city.
Besides those you mentioned above, you can also go to Dujiangyan Irrigation System & Dujiangyan Panda Valley, Xiling Snow Mountain, Mount Qingcheng, Jiuzhai Valley National Park & Huanglong National Scenic Reserve. After touring around, you can spend some time to visit downtown area. Chunxi Road and Wide and Narrow Alley are also must-sees.
As you said, it is the golden week and there will be more tourists, even crowds in almost every attraction site. Be prepared, book the train tickets as early as possible, and take care of your kids.

Thanks a lot. I will check all these options and arrange tickets in advance as suggested.
I hope the lines won't be a killer...