Ok, so with Standard Edition you restrict the things to look at (i.e. no FT, no DRS).
A good start point for iSCSI is the guide meemad linked above.
Other software related aspects I would consider is enabling jumbo frames between VNX and ESXi hosts (and switches within if any) configuring VLANs (separate VLAN for iSCSI traffic, management traffic, rest of traffic), using separate vmnics, if possibile, for iSCSI, management, vmotion and VMs network.
Edit: VLAN separation is fine.
nic distribution seems ok, maybe have a look at nic teaming policy what best suits you especially in iSCSI vlan and if possible to separate vm kernel ports for vmotion and management.
Hope this could help,
Regards.