In the same position as yourself.36yrs,married, kids etc.PPL completed and 1/4 of the way through Distance Learning.
Class 1 first,then save up and do your PPL as intensively as you can manage,you should complete in less hours then.Distance learning is a big commitment.I am studying 3 to 4 hours a day.Days off are full time study days,so I hope your wife is good at DIY.That is another thing...be totally honest with your wife of what this all entails,you will need her support.Allow 3 to 4 weeks for your CPL depending on how and where you go.Allow at least 4 to 5 for the IR.Use any hour building to practise for the CPL/IR.And before you ask...No it doesn`t make sense and yes you are crackers for even thinking of it!!

Good Luck.