No, it probably is a ponzi script but I've seen it before, and this one should last another month or two.
If they are indeed a professional traders and skilled analysts, I believe this website will lasts forever. But since you mentioned that they will only last for a month or two which is not likely to happen, this is proven to be a ponzi or a scam.
Their website might last for a month or two, but the payment might only last for two weeks or less.