So I would caution everyone to make sure the replacement cost for your improvements will realistically cover your actual replacement cost in the event of a total loss.

Assuming that's true, I would recommend looking for a replacement property (or properties - you can purchase multiple in the exchange) with value of at least $725K (selling price).  

I know you said you don’t expect anything major on the properties soon, but I would take a careful look at what is most likely to need to be replaced soon and figure out how you would pay for that if it needed to be done tomorrow.

If I can replace the bathtub with a shower, I'd be able to make the bathroom feel larger.  

Sewer line backup, ordinance & law, and replacement cost coverage are coverages I include. 

Insurance-  replacement costs.  

Here are some of its vitals:- Zestimate: $345K (I know this is typically 10% or so high)- Last Sold: 8/2021 for $281K- Roughly 1400 sqft- Some cosmetic work needed- $25K left on solar loan- The home was build in 2004 and it looks like it has the original AC unit, so I am assuming that needs to be replaced too. - 2 story house with very small rooms and and 2 steps down, imminently as you enter the front door.- Gated community and in a reasonable HOA. - The home is 2 payments behind and already got a letter from the lender about future foreclose.

Replace it with a normal fridge.

Do a 1031 exchange and buy two replacement properties - one for $250K cash and one for $250K using the remaining $50K of proceeds as your down payment.Once this is done your 1031 is complete. 

Essentially, your new replacement property will consist of (1) a thirty plus year ground lease on the real property you already own; and (2) new capital improvements made on the real property you already own pursuant to the new thirty plus year ground lease.