What I'm doing is --
Single (1) targets:
Charge > Rend > MS > Heroic strike (until TfB procs) > OP (TfB) + SD (Execute) spam > Thunderclap
Multiple Targets:
2 - 3 :
Charge > Rend > MS > Heroic strike (until TfB procs) > OP (TfB) + SD (Execute) spam > Sweeping strikes > MS > OP > Execute spam > Cleave > Thunderclap
4 or more;
Bladestorm > Rend > MS > Heroic strike (until TfB procs) > OP (TfB) + SD (Execute) spam > Sweeping strikes > MS > OP > Execute spam > Cleave > Thunderclap