Why not do it yourself? You have a method for trading and you are looking for someone to use your money, looks risky to me theres a lot of scammers out there never trust someone especially if money involve even reputable members of this forum as we dont know them personally.
I can think of different reasons on why he can't do it himself, and that is, he don't want to deal with KYC, country restriction, And other troubles that might occur, as I think it was risky for the doer. So those who will accept the offer must be careful, and make sure that they have already an experience on these types of shady deals. But this type of scheme is new to me.
Usually, the OP's of these, are only asking for someone's account and they will borrow it. While the OP here is willing to provide money to the initiator? Cool and maybe yes, there might also be a risk on his side because someone can ran away with his funds but there must be a way to prevent if from happening.