Your plan makes sense, IF and only IF, we do end up getting inflation and high interest rates in the near future. That if is by no means a certainty.
I have no idea who will be right in this inflation/deflation debate, but be aware that both sides have good sounding arguments. (Although obviously one side is wrong)
If you look at Japan over the course of the last decade and a half, you see low interest rates and stagnant economy with bouts of deflation. There are lots of reasons to think we will experience a similar fate. If that comes to pass, your plan will be a loser, and you will have to cough up money to pay off the loan and interest, or go into bankruptcy.
But maybe the deflationista’s are wrong, and you’ll be able to re-lend the money into high paying CDs or some such.
Just be aware that your plan clearly falls under the category of speculation and comes with risks.
