If I was you i'd stick with one school. When I did my PPL in Cornwall 2 of the flying schools I was with actually went bust and therefore I got my PPL at the third flying school and it was long over due. Different instructors, aircraft etc. Better to stick with one flying school.
If your current flying school doesnt offer the CPL why not just hour build there and then when you have enough hours for the CPL go and stay with your parents for a while complete the CPL down south.