At 37 you could achieve this, however have you looked at the cost of training to CPL standard (hrs and license)? You would probably need to get at least 1500hrs under your belt (to make you employable) and some of that would need to be twin (a guess would be around 1-200hrs).
You are going into a market that is poor at the moment but will hopefully pick up, when you do you will be competing against quite a lot of ex-mil or guys from the offshore industry with masses of experience/hrs.
What sort of time frame are you thinking of?