i agree, with split you tend to focus more on a specific part and you'll more likely have DOMS the next day.
with a full body routine its okay i squat every single workout
im still a newb been training a year and im on a 5x5
with 1 or 2 supplementary exercises added each day (like abs/hyper, bis/tris) im getting stronger each week which is great.
bench 200, squat 270, dead 330
its totally okay, im doing tons of posterior chain work. just do it by feel, if you feel you might fuck yourself up, skip the deads that week