I can't comment on the board choices (except that I haven't heard much good about the Feather). My fiancee started on a K2 Luna and liked it, great mid-range board, but I believe they've gone to a hybrid camber shape on that board now.
so I looked at the k2 luna at evo but I dont think they still produce this board. They now have the bright lite and the sky lite that are within my conditions. Anybody with advice regarding these boards??