I'm not sure using the 50% rule for such low rents is appropriate since there is a lower limit on what repairs costs and these rents won't go as far.

Depending on the MLS rules in your state, you may be allowed to become an unlicensed assistant for another agent and gain access that way, but barring that, you'd need to get licensed yourself.

Based on 50% rule, you will cashflow roughly $190/mn.

Of course, there will always be exceptions to the rule.

Typically it means making multiple passes at the data.The real killer is that the algorithm or rules quickly become obsolete as new information is available.

Start with the 70% rule talked about here often*.

"I work full time, and I'm inexperience with construction so I am choosing to hire a general contractor to walk through the property with me (before the offer) to get a thorough and accurate estimate (no rules of thumb).

Fannie/Freddie money = Fannie/Freddie rules.

My rule for wholesaling: Buy at a steal, sell at a deal.

Then you can use the 50% rule (well discussed throughout this site) to determine your offer.