Hi @alexanderrigov,
We have started with about 90K SP without any members which is what allows us to deliver the promised ROI in a first place. As new members come in they also delegate. Additionally, as we upvote member's posts we will get curation rewards which we will use to power up or lease additional SP. We are also doing other projects on the side which brings us more Steem to lease more SP or power up.
You can always try us and if we don't deliver then you simply cancel your delegation.