Wow didn't have an F2L-1 this short! Your continuation is obvious enough after that, but how about this...
R D' F' U F' U' F R2 F R' D // 3 corners (think of it as building the RBW block in a convoluted way, while making an extra pair)
Skeleton B2 U * L F2 D R' F B2 R D' F' U F' U' F R2 F R' D...