I have thought many times about something similar but, honestly, I doubt I would have the time to maintain the "product" on-going, I mean, it needs a lot of dedication but I think is a great idea.
Additionally, I think that the best would be to dedicate on HBD the totality of the tokens sold in order to get a 10% interest that, later on, would be the part that you will put in risk on the trades, do you know what I mean?
This way you could ensure not losing the investment but only put under risk the interest generated and no one would "blame" you about any loss.
just thinking