Don't buy a macro lens for the sake of buying one. Try closeup filters for the kit lens, because that gets closer. You have to think how often you'd use the macro (usually a prime lens) A nice prime lens would be nice like a 50mm f1.4 or a sigma 30mm f1.4. Low light photography.
Tripod isn't especially fun to lug around IMO. What of your gear is restricting you now?