Buy in: 200 meter walk. 8 reps Cat/Camel, Birddog, side-lying bridge. You have mobility issues if your squat isn't perfect. Work on those issues and pursue improved movement and efficiency. Ask a trainer for help if you're unsure. Progressively load your barbell to prepare for the workout.
Back Squat 5 sets of 8 reps. Straight sets.
You have to be smart with regards to loading choice here. As always, please focus on rep quality above all else. Shoot for 70-75% as a guide.
Finisher: 30 calories bike for time.