@Todd Pultz, thanks for the detailed answer. Finding solid quads under $100k sounds like a dream. They're nearly impossible to find in my stomping grounds (NYC), so it's good to hear that they exist in certain markets.
Your analysis in #2 is spot on, and I appreciate that feedback. I hadn't thought about vacancy during rehab, and of course it doesn't make sense to undergo a major rehab when the ARV won't support it. Rehab numbers are a big blind spot for me, so I'm excited to try House Hacker Pro and learn how to estimate costs more accurately.
My initial plan is to aim for Class A/B locations, but I may revise that as I move forward. No doubt you can find great tenants in Class C locations, but like you said, harder to manage from a distance.
@Max Householder--That second paragraph is gold, and I'm going to apply that plan moving forward. Are there any particular indicators you look for when picking locations? Good school districts, low crime, high rents, job growth? I'm planning on investing long-distance and am hoping to narrow down potential neighborhoods by analyzing statistics before I plan my visit.
@Matt Shaver, thanks for pointing out those costs. Utilities didn't even occur to me.
This is my first post on BiggerPockets, and it's been so helpful. Thanks, everyone!