AC- anterior chain (leg press, front squat, zercher squat, oly style squat, hack squat, etc)
PC- posterior chain (good morning, rdl, pin pulls, ghr, ham. curls, box squat, etc)
LO/Sh- lockout and shoulders
Ch/Bck- chest and upper back
Always include midsection work with squat and DL days.
Curls somewhere in there for injury prevention
M T W Th F S Su
squat BP DL BP Sq.
AC Ch/Bck PC LO/Sh AC
bp sq BP DL BP
Ch/Back AC LO/Sh PC Ch/Bck
I think this way, you're not going to overtrain and can still work things hard and spend more time in the gym.
You could also do some light squats before DL's and do your AC work DL day so you squat twice a week and do some light pulls after your heavy squat and do your PC work after squatting. This way, you get more practice with squat and DL.
Now that I think about it, I like that better.
edit: I forgot I lose formatting with the new set up. Just ask if that needs cleared up if you don't see what I was trying to say there.