20' degrees is the go. If I hadn't used the get off slow clean up later technique I'd be tangled up in the railway girder horse pens at the end of Anna Creek Station's boggy strip. Works a treat. Weight obviously decreases performance however it is the method to get a 210 out of just about anywhere.
20 Flap
Full power
start unsticking the nose wheel(slight backpressure) at about 40 knots
let it fly itself off, should be around 60 odd.
Get the nose down and get the speed up.
Fly away and clean up.