Drag radials and a four speed

This is just a personal opinion, from a 727 driver, but I think you will have better luck with real slicks. Slicks can spin a bit and still work, drag radials need to dead hook, they don't recover from a spinning situation well.
Your clutch tamer may throw my opinion out the window, however.
Understand and have had allot of legnthy discussions with some smart guys and that's the plan with the clutch tamer. The guys that are going fast with manuals and drag radials are using adjustable clutches. I don't know if you are familiar with the et street radial R but they are a different animal. They are a radial type construction but use nylon plies and are very light/pliable compared to traditional drag radials. It's the first radial that mt advertises as actually having some success with manual trans cars. Up until now I always ran auto cars and man drag radials are so nice compared to slicks for the type of street strip I do.