That's a great plan, in theory. Isn't school great! As you've suspected, the key is in the financing, which is basically impossible to get for rehab work at 100%. Maybe you can ask your mom? If financing were easy, then there wouldn't be anybody doing rehab work. I'm sure you've covered that basic economic concept in your finance degree, so I'll spare the explanation.
Without a solid credit history, you'd be lucky to get 50% financing from a private lender at 10-14% interest rates. So, you should get your start working for an experienced rehabber and earn some money. Once you've got $30-50K in scratch, then you have the chance to make some money.
If you ever muddle through b-school, you'll get your fill of amazing stories of the masters of the universe pulling off LBOs and squeezing out tens of millions in the process. Even for them, they can't do it with 100% financing.