Doing some research around the internet i found that the best mood for light main is +atk -resistance. Makes sense since root of warrior gives 100% additional resistance. So is this the right mood?

Also, does mood stay the same if you switch mains or you have to remood the new main?

And finally, does Life Recovery stat (from group skills, 8 inner gates etc) affect leech or is it useless in 1v1? Where IS it usefull? Should i bother leveling it?