SAS topology advice with 4 HBAs and 11 SAS expanders

Hardware Enterprise Gear
,
1

I have the following hardware:

4 LSI 9206-16E HBA
8 AEC-82885T 36 Port [24 drive limit] SAS expander
3 EMC KTN-STL3 15 drive SAS expander

I am looking for advice on the topology.