Rear Tire Discussion If I may?

Hey All!!
The car the tires are going on is my Demon - All steel car w/SS Springs moved inboard to the frame.
I'm presently using M/T ET Street "R" - 275/60 - 15's.
Best ET is 11.18 with a slow 2-3 shift and a tiny stumble off the line, 60' was 1.48. - that was with a 4.30 gear - was going past 6500 before the traps, I've since changed it to 4.10
I've been contemplating the M/T Pro Bracket radial slick (Pictured)
Reviews on Summitt and Jegs are decent, wondering if anyone has experience with them? Pros/Cons??
I prefer to go with the radial as I run a radial front tire, and of course that will bring up the issue/myth of mixing radial - bias front to rear.....Maybe it's just personal preference?
I thought to myself - what the heck! It's the middle of a COLD winter. I'm waiting for word on my transmission from ATD (Automatic Transmission Design)
Why not come here to the professionals and start up some good conversation before I make a purchase.
Hope everyone is getting through this winter alright as it's been cold and snowing even in Texas and Florida!!!

Thanks in advance!!

Wally