Weight training during lunch break (uk)

Hi All

just after a few suggestions I will be starting back to the gym in the next few weeks and was planning to train every lunch break, the plan is to do weights as my cardio will come from walking to and from work. will only have a 40 minutes to do my session. so was wondering if anybody had some suggestion for how to plan the week

my plan was going to be

Monday - chest + biceps
Tuesday - legs
Wednesday - back Abs
Thursday - shoulders - triceps
Friday - full body on machine weights

looking forward to all your help