If you want to gain your AWS SysOps certification and become a Sys Admin, we have you covered with this learning path:
http://cloudacademy.com/blog/aws-sysops-certification/
Solutions Architect vs Sys Admin
A Solutions Architect is expected to fully understand all the core AWS services and their appropriate use cases. In other words, they are focused on design.
The SysOps administrator must also understand how AWS services work, but is primarily focused on deploying and managing them in real-world projects.