So the only answer is to nail the 70Kts approach speed all the way, don't drop the last stage of flap...
If you don't drop the last stage of flap, then 1.3Vs is bigger than with full flap. For example, with a Cherokee, Vs reduces by about 3kt with each extra stage of flap. Hence the "book" numbers are greater with reduced flap. However, as Bose warns, beware of short runways. Most POHs will give charts of runway length required at various landing weight, temperature and head/tail wind and with a specified flap setting. If you decide to add half the gust headwind component (or half the total gust component) then you have more stall margin if the headwind drops in a gust, but as Bose points out, you're then outside the manufacturer's conditions for landing length. And ground roll increases with something approaching the square of the ground speed at touch-down.
Bose and other experienced pilots probably don't need the extra margin as their reactions will be quick and accurate in gusts. Less experienced pilots might prefer the margin. I don't see anything wrong with that - provided the runway length is sufficient, as Bose points out.