Dell Compellent SC8000 Connectivity with CISCO UCS Blade chassis

Hi,

I need to know what is the best practice while connecting Dell Compellent SC8000 with CISCO UCS chassis. below is the scenerio.

Equipment:

1) 1x Cisco UCS blade chassis 

2) 2x FEX IOM with 8 ports

3) 2x Fabric Interconnect switches

4) 2x Cisco Nexus 5548UP switches

5) Dell Compellent SC8000 (4x FC Ports and 4x 10G ports per controller)

There are two questions regarding connectivity:

1: where should I connect the SAN in the infrastructure either on Fabric Interconnects or on Cisco NEXUS 5548UP?

2: whether or not i can utilize all 8G FC and 10G FCoE ports together to get the max. bandwidth?

Thanks