I fly my rev in lower winds with p90's actually. Ive used it in some very gusty winds and never broke one at all.
Kite actually feels much nicer with the more flexible LE too.
I tried playing with p90 down, and 2pt down but that really seems to kill the kite. p200, similiar or better seems to be minimum imo.
I fly my std wind rev with p200's from 5-20mph, never broke a tube and have no problems flying the kite at all. Id imagine most folks would want a stiffer LE though. Seems that for std p300 is the going tube.
Anyway this cake is great.
It's so delicious and moist