No need to factor headwind components or half the gusts or whatever in a C150. It is not a jet where you need to increase speed to counteract for lull in wind. You have a prop will give instant lift for any airspeed drop. With only 5 knots difference in stall speed between full flap and no flap (C152), it makes little difference if you land in a cross-wind with full flap or flapless. Just remember that you will float a lot longer with no flap, and if you are landing on wet grass and only a couple of hundred metres of strip, then chances are you will be still skidding on the grass as you go into the ditch.