I have an exchange Project that I have been running for some time, The biggest problem has been Capital. I just raised $25,000, I plan on adding a special coin built for the exchange with some added features ( I intend to do an ICO for this coin).

My Biggest Problem is How can I use a $25,000.00 budget effectively and Spread it over six Months,  The developers working with me on this Project are not collecting salaries and $25,000 is all we have .

What Marketing Channels will produce the best return on investment?