Well,
You would need to let us know which code you are qualifying to? Are you doing fillets or CJP's? What materials? Which welding process? Etc.
If you are doing fillets, since you mention fillet break test, then the UT is out.
If working to D1.1 you should be bending the coupon as well as doing macro-etch. It really doesn't take that long and is a simple test to do. (with the right equipment anyway)
Have a Great Day, Brent