commute from Crayford to Greenwich

[user1490782120]

Hello,
DH works in Canary Wharf, and we live in Bournemouth because I work in Bournemouth. I get a job offer from Greenwich uni, so we will move to London. We have searched the threads, and find two areas that would suit our needs (e.g., good state schools, ds is 4.)

1. Greenwich: working distance to work, good school, can only afford 1/2 bed flat.
2. Crayford: 1 hour commute for both, good schools, can afford 3/4 bed house.

Does anyone have experience living in these two areas, are they good for family? The second option, how is the commute, we plan to use trains.

Thanks!

Just to add, crayford we mean the area between crayford and dartford stations, where dartford grammer sits.