If you good, best to become CTA and charge 40% of profits. Dealing with giving calls live or laughable delayed is huge pain in arse, only 20% actually will do the calls as those who take services are usually too scared to take them, and those that do take them are not doing one lots as they mixture of profitable, vendors or heavier traders. Best to walk away from this notion and add one more lot, good traders will make more in one day than whatever service one provides for entire room for the month. Plus, good traders can figure out for most part what you are doing and will steal it, you end up competing for price.