10 month ROI isn't guaranteed because market can crash in coming months, if that happens your ROI will take longer to accomplish, can be up to 13months or even more, my advice is you need to be prepared for any possible out comes
ofcourse, for sure !
The way i look at it, and i hope he does too, is its an investment, and a gamble .. hence, dont put money in that you cant lose, and dont expect , count on, or depend on, the return...