The idea behind full body workouts is to keep the training brief and to the point. Using the basic heavy compound exercises (the Big Boy exercises, the growing exercises, like squats DL's, benchs, rows, etc.). That would be one exercise per muscle group and keeping the sets to 3 and reps between 8-12 per muscle group.
You do not have to do DL's and squats in the same workout, though the squat usually makes up the cornerstone of this style full body workout. Something like the classic squats, rows, bench, overhead press, BB curls, calfs and abs. Or DL's, chins, dips, PBN, curls, calf & abs. Another is squat cleans, inclines, overhead press, curls, calf & abs. Do not need a lot of little exercises for smaller body parts. If doing 7 exercises in a full body workout than you are doing 21 sets total. Some guy's do that,and more, on a single muscle group with split training. Based on a 3 day a week full body training, that is 61 sets a week total. If training with serious intent every workout, that should be quite enough for a 6 to 8 week full body training cycle.
Full body workouts are not just for beginners. Lot's of experience men go back to that way of training from time to time. Seems to give a better recovery advantage and can even renew gains when guy's hit that sticking point from excessive training. Works well for athletic programs also. Good Luck.