I think your doing the right thing getting the lion.in that size .
it will give you that. Extra low end punch .also will be more stable in big gusts .have you got a good 490.
heres the extra cams ,I don't need them ..it already came with the RDM cams in it ...so two set for different size mast ...cool hey .David claims this sail will work with any mast ...in his vid.
but I fully down haul it to specs and beyond ...you can really flatten it off like a race sail ...