Promotion of VKontakte Groups

We need to build several VKontakte groups. Only active subscribers are allowed. The scheme of work is an order for 500 - 1000 people, then the evaluation of the received subscribers by indirect criteria (activity, selective verification, etc.) - about two weeks, then - an order of 2-3 thousand subscribers, again checking by indirect criteria, then - an order for 3-4 thousand subscribers per month with a monthly prepayment.
So far, 5 groups are planned to be promoted (one new group each month). Groups are entertainment, not commerce.