Hey watch out the load you'll put on those relays.

The relays can only drive 40V DC 1.2A max.
I don't know how the devices you'll hook to the relays really look, but from what you've written, the relays are in no way the right choice for:
Relay 1: Lamp (voltage limit)
Relay 2: Outside Spot lights (voltage limit)
Relay 3: Cabinet fans (voltage limit)
Relay 4: Subwoofers (current limit)

You can use them to drive the right kind of relays, but not to drive the devices you listed (until you provide specs for them).