Starting with a $100K headstart is more than a enough to buy a new primary home. 

Investment Info:Single-family residence buy & hold investment.

Finding a university that is growing each year & buying a home very close on campus to the college housing.

For quick math you'll need something to the magnitude of 200 units, call it 16 millions worth of multi-family.If you are looking for cash flow, maybe consider buying a business instead of real estate.

Investment Info:Small multi-family (2-4 units) buy & hold investment.

Quote from @Sofia De Santos Tavarez: Hello, my husband and I are looking to do our first rehab in a different city than where we live (we live in Austin and looking to buy in El Paso), and are wondering how one determines and writes a scope of work and determine what material to buy for what.

What are your long term goals (eg do you want to buy another house) and do you have a large savings set aside for unexpected expenses? 

Investment Info:Single-family residence buy & hold investment.

BiggerPockets also has a calculator to analyze deals, and I highly recommend you start this as soon as possible, even if you are not ready to buy.

You mentioned buying a fixer upper with your HELOC and now are talking about a 20% down payment.