I guess I've just found that a more "whole" body lift works better than just stuff like a bench or a press.
I did quite well on the power clean and squat with an OLAD format, but not nearly as well with bench and press. I did it 4x weekly, and it was a very short and sweet workout.
Think about doing short stuff that encompasses the whole body.
Maybe a big "full body" movement coupled with an upper body movement like the press and chin (or weighted chin)
Squat + Chin
Squat + Press
Clean or Power Clean + Press
Deadlift + Chin or Press
Etc...and you don't even need to do the OLs
Front Squat + Press or even thruster...I'm sure you can come up with as many as I can.
Not something that's going to add a lot of time to the whole thing, but just give you a greater, full body stimulus.
And, maybe every few weeks do the MetCon first, and train the heavy stuff in a fatigued condition (low skill lifts, please), just to throw a monkey wrench into the works.