One thing I would advise is renting a car and spending your last day driving back through the area for a second glance and driving up and down several streets.  

Right now what I'm facing is:1) Buy a 3-family home for investment (can't live in it, as it's too far from work), spend about $100K in cash to purchase + repair, to get about $300/month net cash flow after expenses.   

Appears as if you have begun to narrow down the niche of real estate you wish to embark on.Bigger Pockets has various resources: ebooks, blogs, forums, podcasts, webinars, colleagues, keyword alerts, an awards system, s learn section, informative people in many fields of real estate, and more.Consider spending 30 minutes for 30 consecutive days on Bigger Pockets.

We do this type of deal regularly and for just $10,000 we control a home that after we spend $40,000 fixing the home and sell it for $460,000 we will deposit $40,000 in a bank account that will pay our seller $1,000 per month for 40 months, and we will keep the ballance.Jim

Give you the wherewithal to pursue and achieve your long-term goalsMany investors start off "too hot", and they either overdevelop their first property or they spend their money too fast - either of these behavior will stop you dead in your tracks, and you probably won't even be able to achieve your short-term goals - and you certainly won't have the resources to pursue your long-term goals.

., Resident in the forums.Click on the “learn tab” at the top of this page, and you could be spending many hours on the Information that is available.Raymond

Otherwise you are looking at buying for $85k, spending $25k for a total for $110k with a profit margin of $3k.

I would spend time researching what you actually think that specific house will rent for after rehab. 

Seems like you should spend some time investing in yourself and your education.

I can spend about 20 hours a week working in real estate investing.