25k is not enough for a serious project. How have you receive this money? From an investor? Or is your money?
If it is your money for using only for marketing, I would consider investing on Instagram. Facebook is allowing more ads from blockchain projects, and Instagram is the platform with best roi for new users.
$25,000 capital investment certainly is not enough for a viable exchange.
You can look at the wcex project started I believe close to two years ago. They had a massive following and knew the proper channels to get the word about their project before they launched.
I dont know if they were successful because after receiving they needed to do kyc and aml before distributing the free tokens for just signing up and getting them referrals to their project it completely turned me off of supporting them and I didnt bother to look any further into them.
I think they rebranded to wcx or something like this afterwards.