Just go through them, select the renovated/closely matching ones, and enter them into a model.Here's my fix & flip model, you can see the comps entered and some quick stats below them: Then I use that comp data to adjust the Sale Price in the model to what I estimate it will be (double check the resale $/sf is in-line with the comps), then adjust the purchase price until I hit my desired return level. 

On a scale of 1 to 10, what is your risk tolerance level?

Been There Done That & got a tee shirt & don't want to waste my time. 

I would recommend flying out there, getting to know the area on a detailed level  and talking to local investors (someone not trying to sell you anything).

The things you have mentioned are simple, high level thoughts based on assumptions.

It’s a bit like playing Monopoly but with real addresses and real money.. and when done right, it can feel like unlocking a secret level in the real estate game.But hey, no point pretending it’s all sunshine and roses.

The problems with the project mostly stemmed from the crawl space work, which required shoring, replacing structural members, leveling floors and insulation. 

It is in a northern MI Downtown area (opp zone) in a county seat with 2 hospitals, had it re-zoned to mixed use, and is considered blighted which makes it eligible for MEDC funding of up to 50% of project cost.It is 8k sqft (4,000 each level) with the lower level being a walkout (top level is street level with sloped drive down to the rear of the building).

That can vary depending on the market and the level of service provided.Hope this helps!

Calling the appraiser to see what you can do to push it up a "C-Level" would be smart before doing any reno also, might only need a few things to make it far more valuable in the eyes of the bank.I've heard of a tactic for figuring out demand, which is to put up a dummy or coming soon listing on facebook marketplace and see the amount of activity you get on it.