@Byron Kearns - BRRR refers to a strategy that includes purchasing a property for cash, then refinancing with a lender. Most lenders won't allow you to pull more than 75% equity from a rental, so you will need to have 25% equity. With little money down, you most likely won't be able to achieve this.
Your best strategy in my mind would be to use this property to learn how to buy, rehab, and sell a property. It sounds like it doesn't need much work, so you might be able to do that.
Now, on the the questions that you need to answer:
First: How much will the house be worth once it is repaired? Go to your favorite MLS website and check for local comps - how much have similar houses been selling for in the area? This will give you: how much you could sell it for (and therefore, how much your profit would be), or how much you could refinance for (again, you'll need more than 25% of the comp selling price before you can take money out).
Second: how much will the rehab really cost you? If you have prior experience doing work like this, take a walk around the property and write up an estimate on how much it will cost you. If you don't have experience, ask some local investors for their favorite contractor who can walk through with you and give an estimate. Most investor-friendly contractors that I work with will walk the property for free with me. This info will tell you how much you will have to spend on repairs (obviously) and how long it will take to complete (how much money will you lose while paying mortgage / utilities while doing work - or "holding costs")
Third (which you already answered): how much can you rent the property for? Take a look at RentJungle and see how much a 3Bed/2Bath rents for in the area. This will tell you what your income would be if you hold and rent.
Fourth: what are your expenses going to be if you hold? Mortgage, taxes, insurance, and the "percentage expenses" (CapEx savings, maintenance savings, vacancy savings, and Property Management: 10%, 10%, 8%, 8% respectively is usually a good estimate on these). This will tell you if you can make money by renting the property once you're done rehab.
On to the bottom line of how much to offer:
For fix and flips, you usually want to aim for 70% of final sale value (how much the comps sold for). That means you want your purchase price plus rehab cost to equal 70% of the sale (or less).
For buy and hold, you'll obviously want your income (rent income) to be greater than your expenses (listed above). To refinance, you will need to have the new appraisal (after rehab) to be large enough that your original loan is less than 75% of the new appraisal.
I hope this helps! If you have any questions, let me know