For PPL I would keep it local to allow more time for study and flying
Believe me there is no way you will be able to commute to Stapleford and keep your sanity so why not save the accomodation money for your advanced training post PPL - If you got on with the instructor then just go for it, Biggin is a very good place to learn and if you learn at an airport with such a variety of traffic then you will be confident anywhere else