You should finish one trade before opening several new ones. You are offering to sell many different things, but are not replying to buyer son any of them. This is starting to seem suspicious.
He can only send up to 5 PM's per hour so that may be why he is not responding to offers via PM. There is no rule against trying to sell multiple items at once. There are reports however that the OP is refusing to use escrow so you probably should trade with caution.