CTA Hedge Fund

Hey guys, I have been trading commodities / foreign exchange for about 4 years now and have had many colleagues and friends ask me to manage some (small) trading accounts for them. 

After doing a bit of research I see that I need to become a registered CTA in order to trade other people's money. Does anyone have any experience in this space / managing a similar fund? What are some good beginning steps to take?

I know people on here aren't an "official" spot for legal advice, but does anyone have any info / link I can read up on in terms of becoming legally certified to do this and what sort of custodians can hold the fund? Or can I legally set-up a network on MT4 that I can manually execute the trades on all accounts at once. (I have heard of this before but I know the U.S. is so damn strict on the commodity market) I'd love to do something similar to a PAMM account but again, I can't find a straightforward source on if it is legal in the U.S. 

Lastly, I do think it will be very difficult to market this as a legitimate fund due to the vast amount of "forex bois" on Instagram with their fake lambos. How do large CTA funds go about their marketing / outreach? 

Thanks!