Connection from Yuanyang to Kunming

We are planning to travel to Yunnan in August. Our schedule looks like following:
Day 01: Kunming (Grand view park, Dian Chi),
Day 02: Xi Shan,
Day 03: Stone Forest/Shilin - night train to Dali,
Day 04: Dali town,
Day 05: Erhai Hu,
Day 06: Zhonghe Shan,
Day 07: villages - night bus to Shagrila ,
Day 8 and 9: Shangrila,
Day 10-12: Lijiang and around - night train to Kunming,
Day 13 and 14: Jianshui,
Day 15: Yuanyang - here comes the question: How long does it take from Yuanyang to Kunming and how many buses are avaible a day? Does anybody know the exact departure time?

I'm travelling with my mum (60) and my 3,5 yrs old son. Does the schedule seem to be realistic? I don't want us to rush but even not to stuck somewhere and waste time.