building vsphere cluster with 10Gb ethernet

Hello all,

i am looking for some best practices information. i building a 4 host cluster (esxi 5.5) using 4 x  DELL M620 blade servers (M1000e chassis)

I have 2 x 10Gbe ether adapters for each blade.

How do most people configure the networking with this type of setup? I am connecting to iSCSI storage (IBM V7000)

I was thinking

1 vswitch for vmnet/mgmt/vmotion

2nd vswitch for iscsi

is this optimal? should i break down the 10Gb into smaller segments?

thanks in advance