choke options for mag blend

[chrmayo]

I have a Winchester sx2 it had a 28" barrel but choke was stuck and I messed the barrel up. I had William at sumtoy cut and rethread it and its now at 21.5" with standard win-choke threads. I got 2 boxes of the 3.5 mag blends from wife for Christmas. Looking to see what choke you guys recommend