without knowing how much command and IF you have it's hard to say. maybe 25-30 hours for the CPL.
I did the majority of my training (well basically all of it except for 0.8 IF) and walked away from aviation as i knew i wasn't going to get a job at the time. (2003) I went back in 2007 and it took me a good 25 hours (3 months due full time job) to get back to a standard to go and sit my CPL.
Truth is that even the CFI won't know where your at until you blast off for the first time. A bit of advice - even if you have done your CPL subjects previously, buy the study books and go back and refresh yourself. making silly mistakes because of not knowing your theory is going to cost you $$$.
All the best!