Turntable Setup advice requested

This is similar to a previous post of mine, but it is a different question.

Basis 1400
Rega 900 Arm
Benz Lo4 cartridge.

The turntable sits on a stand made up of approx 100 pounds of cement.
Three large Bolts are the stand's feet (and leveling device).
1/4 in. plexiglass dust cover sits on weatherstripping on the cement turntable stand.

The cement turntable stand sits on the floor in the basement, which is the "audio room"

Questions:

1)
Should I put "tiptoes" on the Bolt heads so the three "feet" of the cement turntable stand can punch through the carpet and padding to make contact with the concrete floor?

Or

Should I leave the "Bolt Heads" flat and let the carpet/padding do some "decoupling"?

2)
Since the Basis 1400 has no real suspension, should I buy a product (I'm sure one exists) that should go under the Basis tt's feet?

3)
Is my cement turntable stand a bad idea?
Is there a better approach?

Thanks,
Steve