RR
I would check your figures, I think if you turn finals at 1000' and 1ml on a glide approach you will overshoot the field - even putting down a couple of stages of flap (I would say full flap if it was not a C150!)
most a/c will get about 3miles/1000' in the glide, IoW - France is about 50 nml which means you SHOULD be able to swim ashore from about 8,000' if you lose it in the middle and turn to get a tailwind.
