Hi!
I started an online community from 0 people and grew it up to a situation where it was profitable and has remained profitable for 17 years, so I have some experience of building a community. Admittedly, this was not a full time role and the site is now a bit out of date, but at its peak we would have 120 online users at any one time throughout the day, around 600 users per day.
I'd like to ask more about your community and also your proposed payment methods, please.
What is the community? Is it based on a website, is it a facebook page, discussion forum, etc?
For your payment model, I advise that you need to be very careful about paying $3 for any new sign up as somebody unscrupulous could just make a whole bunch of accounts and claim that they are new users. This is really something you/we need to think about; you have to find a way to verify that you're not being scammed by marketers.
Equally, do you have a method of verifying which marketer recruited which new user?
On my website I built code (in php) to manage referrals as I allow players to make a % of the spend from new players, this is all automated and works quite well.
Anyway, I would quite like to be involved in your project. I am sure we could have a good working relationship and have some success together. I hope to hear from you.