215 drag radial traction

Need some tire experience. Currently running 235 BFG radial TAs. I can't floor the car off the line. I turned a 12.9 @ 104 and I'm still running super rich. The tires are 26 inches tall. If I put 215 drag radials on 14s I end up with 24 inch tires and my rpm through the traps will be 6100 which is right where I want to be.

Is a 215 drag radial going to give me the traction I need to floor the car right off the line?

I'm dying to beat my buddy's 12.5 Chevy!

Thanks
Dave