SEP 11.x topology

Hello everybody

I need your advised about my case

I going to deploy SEP 11.x with diagram bellow.

SEP Manager will be installed at Sites C with MS SQL 2008 Express.

1. Network administrator at Sites C have full permission
2. at Sites A and Suti B only have read their SEP Client (such as : monitor, read report,....

Please give to me your advised and related document if any

BR/phamduyus