How about a compromise, something like this:
Monday - Squats + Bench 5x5 sets across. Deadlift 1x5
Wednesday - Front Squats + Overhead Press 1x5 ramping. Chins 5x5
Friday - Squat + Bench ramp upto a 1RM, 3RM or 5RM. Row 5x5
The Friday here is your PR day which sets the pace for the next week and allows you to handle weights heavier than you normally would. Wednesday is a light day and Monday has considerable volume in terms of sets across which should drive your gains.
I don't think you're at the level where abbreviating to the 4way split would be better than doing something like the above which is more frequent.