To young still. I've found over the years that Spitzhaubens are a very, very, very slow maturing breed. Saddle feathers and wattles are very late to come in. I've raised them for a little over 7 years now. And most of mine don't start showing defining cockerel signs until they are nearly 4 months old.
I'm leaning towards cockerel on this one, going by the wattles have started coming in and are quit red already. But I'd wait at least another 6-8 weeks to say for 100% sure.