I think you seriously overestimate the amount of steem power you can lease from minnowbooster, at a good rate, in order to make the upvotes worthwhile. Not to mention minnowbooster gets a 10% cut from every transaction. If you and your investor are serious about this, I recommend making a large STEEM purchase and maybe lease something on the side. It may be painful to purchase that much STEEM, but it will pay for itself, in time.
RE: Strong Independent @YallaPapi Don't Need No Whale