February may not be the best time to find a replacement tenant, so you may want to go Month-to-Month (MTM) until April or so.

Reinvest profits, stay patient, and keep building toward replacing your income.

This is purely anecdotal, but I've noticed that the top performing properties in my area lead with an exterior shot.

The out of the box strategies and set ups sold will never replace customized AP/Tax strategies based on individualized circumstances. 

That said, Pricelabs, Wheelhouse, Beyond, are all good, too, but I don't think they replace you knowing your market to set the parameters for them to use.

It all cash flows like a gold mine until the roof needs to be replaced, the main line goes, or you get your first turnover bill and need to upgrade a kitchen. 

Here are a couple of ways you could structure the deal:Lease Option with Seller Financing: You could lease the property with an option to buy later, allowing you to rehab it while giving the sellers time to find a 1031 replacement property.Seller Financing with Deferred Payment: Structure the seller financing with no immediate payments, allowing you to refinance once the property is appraised, and the sellers can complete the 1031 exchange when ready.Escrow Holdback: Transfer the deed into an escrow account, giving you control without immediate transfer, so the sellers can take their time with the 1031.Third-Party Facilitation: Use a qualified intermediary to hold funds and facilitate the 1031 exchange while you refinance.These options allow flexibility for both you and the sellers.

There are still some good markets that will provide cashflow but you'll need to have realistic expectations when investing purely for cashflow. 

Did you figure in the cost of the other tenant paying less than market rent until you can get them up to market rent or replace them with another tenant and how long that will take?

For a rule of thumb, replacing a commercial boiler can range anywhere from $20k to $150k, depending on the size, age, and efficiency.