Ok well about to start my pct this coming monday. And looking to change my 5 day split into a 4 day. and looking for options.

Here is current:

Monday: legs
Tuesday: chest
Wedsday: back
Thursday: off
Friday: shoulders
Saturday: Cardio only
Sunday: Arms (bis/tris)

Thinking of this for 4 day:

Monday: legs
Tuesday: Chest/cardio
Wednesday: Back/bis
Thursday: off
Friday: Cardio
Saturday: Cardio
Sunday: Shoulder/Tris

I work abs in some cardio days. Work outs are 35-40 mins long usualy. I would like opinons on the split and then after i get that squared away, i would like to lay out the rountines and get options on this as welll. Been doing the one muscle group a day thing for awhile now. Only switching exercises. I dont over train even while doing one bod part a day.

All thoughts are welcome, and thanks in advance as always.