Opinion from expert needed - Ethernet network - urgent!

[Homeroid_BL]

Hi all!



I have to establish communication in a network with 9 nodes of S7-1200 and PC running WinCC Advanced.

Each node has S7-1200 with local KP400 HMI. This local data exchange is 70bytes or 40 tags for each node.

Each node has to communicate (have HMI connection) with WinCC exchanging 100 to 300 bytes (70 to 200 tags) each.

Between PLCs in nodes, i got also communication:
Node A gets 10bytes and puts 10bytes to node C.
Node B gets 10bytes and puts 10bytes to node C.
Node C gets 10bytes and puts 10bytes to node D.
Node D gets 10bytes and puts 10bytes to node E.
Node E is Profinet IO controler to a ProfinetIO devices node F and node G (35 bytes exchange each).
Node F gets 10bytes and puts 10bytes to node H.
Node H is Profinet IO controler to a ProfinetIO device node I (35 bytes exchange).

(Please see drawing attached when I found a way to put it)
http://s1373.photobucket.com/user/Homer ... iew=recent

TIA portal V13 allows me to create such network and all connections.
Manuals says that for most distant node I (from WinCC) frame delay for 7 switches is total 0,35sec max.

But,

Is it possible to realise?
What about frame collison?
Would I have communication timeout for WinCC HMI connections, PUT/GET, loacl HMI connections, Profinet communication?

Thanks!