I was just objecting to the 470 ohm resistor. You don't need it, and it only gives you about 9V across the coil. I prefer to keep relay coil drive as close to rated voltage as possible. Get rid of it, and you'll get about 12V, with a 14.5V supply (again, assuming a CMOS 556).
There is no way a 240k gate pulldown will speed turn-off. It is good to have, to keep the gate from floating if you remove the 556.
There is no way a 240k gate pulldown will speed turn-off. It is good to have, to keep the gate from floating if you remove the 556.