You need to work hard to convince the investor to join your project because many investors have a bad experience before, and they don't want to get another bad experience. If you can get many of them, I am sure that it will help your project to grow as we know that the adult industry becomes larger right now. I think you can skip using Paypal because they are very strict to their member and they can freeze the members account without any explanation. You should stick with cryptocurrency so that it will make it better for your investor or traders.