@Devon Moore there are a couple tweaks I would look at. 

If they are the ones making the offers they are incentivized to tweak their Zestimate algorithms to produce lower numbers.I realize Zestimates are not always accurate or a good measure of home value, but there are many people out there that put a lot of stock in them.Would you hire a home appraiser that made cash offers on every home he or she appraised?

A tweak of the model is all it takes.Like the ambitious plan. 

Since it's a one time cost, it would only appear in that year of the analysis vs being a recurring annual expense.Bonus points if this could be tweaked for AirBnB arbitrage.

If you're looking for a more "present-day" solution, then yes, consider tweaking your criteria while keeping cash flow in mind.

The numbers will either make sense or they won't, but trying to tweak them to make sense will likely get you in trouble.One area you have control over is your offer.  

I have tried tweaking the numbers for a flip vs a keep and hold rental and just kinda stuck a bit in analysis paralysis.

I'm am sure someone has done this and can shed some insight.So I am gaining some real momentum, growing and tweaking my buy and hold RI company.

If no major deal killers that would affect income stream of the property or your desired lending structure are found then the buyers commercial attorney prepares the PSA or the sellers does.If sellers prepares initial PSA then the buyer might save some initial money but the contract could also be loaded in favor of the seller instead of fair and balanced to start with minor tweaks.

Overall it works well, but I do tweak a few things manually.