What experience do you have in rehabbing properties? $50K-$75K is not updates, those are repairs. That is a full rehab that has to be managed as such. See J. Scott's book on flipping houses in the Bigger Pockets library. I know you're not flipping this house, but with that amount of repairs needed, it's basically a flip that you're going to move into. That amount of repairs is a big project, especially if it's your first one. How did you determine that repair estimate anyway?
Also, $300K in Riverdale is basically retail price, depending on the size of the house and where exactly in Riverdale it is. That's a high price to pay for a house that needs $50K work, minimum. And what is your basis for suggesting that the house could sell for $400K-$475K in two to three years? Do you have a data analysis to support that? Otherwise, it's just speculating/guesstimating. Even with a data analysis, you'd still be trying to forecast the market, which nobody can do. Investing based on appreciation is something they routinely caution against in the podcast. You make your money on the purchase, not on the sale. If you buy for $300K and your repair numbers are right, then you'd be investing based on appreciation because you bought too high. If you plan to live in this house for ten or fifteen years, that's something different. But if you're thinking about selling it within five years or so, you should probably take a hard look at the numbers using one of the BP calculators.
I'm not trying to discourage you from pursuing this. I'm asking you questions that you may not know to ask so you go into this fully informed. $75K is a lot of repairs. There are so many opportunities for things to go sideways when you have to do that much work. You need to have a plan for executing that rehab before you start. Have you identified a contractor? Have you gotten a repair estimate to know exactly what needs to be done? How are you going to fund the repairs? What is your exit strategy for this house (do you plan to live in it indefinitely or flip it in the near term)? Once you figure all these things out, you'll be in a better position to evaluate this opportunity.