I am looking help design home lab (nested)

Current hardware:

Dell POWEREDGE R630:

CPU: Xeon 2620 V4 8 core x2 -16 core

RAM: 64 GB DDR4

HARD DRIVE: 4 (500GB SSD= 2 TB); 4 (4TB SSHD= 16TB)

USB =32GB

RAID CONTROLER: H730P (VSAM SUPPORTD)

4 INBUILT NIC AND 4 ADDED = 8 NIC

CISCO LAYER 3 SWITCH 3750E (IF NEEDED)

NEED HELP TO DESIGN:

VSAN THREE SITES OR FOUR SITES?

TWO DATA CENTER LINK MODE (NESTED)

ONE FOR NSX (I DON’T KNOW IF IT BETTER IDEA TO INCLUDE IN BOTH DC?

HOW MANY HOST NEED IN EACH DC?

NETWORK DESIGN?