Rancher 2.0 cluster deployment strategy


I plan to se rancher 2.0 and create a K8S cluster (on AWS)

I would like to know the difference between two way:

First solution -> Deploy is possible with custom cluster from rancher, we just have executed the docker run command provide by rancher on workers/etcd/masters.

Second solution -> Use RKS to build a K8S cluster and import from Rancher

At this time, i don’t see really the differences, i can’t find article about that … What is your opinion ?

The last question, to create an K8S cluster we ca