Unfortunately I can't see your posts here (China?), but a few comments.
You only need tent lighting or things like jewelry or cut glass. Stuff that will reflect every part of the room in some facet. I'm thinking its jewelry. Otherwise, and usually, tents are boring.
KitKat: blown out white is no good. White backgrounds are usually horrid unless lit well and maybe some falloff. Its easy for catalog guys to outline I guess. Gray is a much better color-- you can get it very light easily and very dark in the same shot, without blowing out your product. Dark gray is best, IMO. Black backgrounds are tough to make gray without dissing your product, and its so dark that no light gets on the underside. This is first chocolate bar I DON'T want to eat. White plex is another tough background, but great if you put a light under it. Why would you want to light this thing so heavy-handedly? You look about a stop over.