Front squats can be uncomfortable for a lot of people, but I want you to do them. If you can hold the bar in the front rack position, do it. Otherwise, use a bodybuilder-style. If you want to work on your mobility, attach straps to the bar and hang on to them as you squat.
The front squats will be done in the same style you did the close-grip bench press yesterday. Lower yourself all the way down, rise 1/4 of the way up, lower back down, and then push all the way to the top. That's one rep. The weight should be heavy enough so that you reach failure at about 6 reps.
These low-rep lifts are meant to help you build strength, so do them correctly.
If you can't use all four pieces of equipment, look for suitable substitutes, or perform straight sets with short rests.