I would not engine off coast.
It MIGHT not work out well. But an alternative to N coasting, which in SOME cars is worse than in gear, I would just stick to top gear. In my 96 Escort, in gear rpm would stick to 950-1200, and in N the engine would jump to 1600-2000. Now, maybe engine temperature, or other things made it do that, but that iswhy I stopped with it. My wifes Escape also does this, where it is SLIGHTLY more efficient to coast in gear vs out of gear, regarding fuel use.
Please note, regarding fuel use. I believe in gear will create driveline drag, and slow down faster(it is not drastic in her vehicle), so it might break even, or the other might be better, I say this because every car is different, and it would be wisest to test out different methods and see what works best for you and the vehicle.
