Some will tell you to make the change anyway but that seems a large risk in this high interest rate environment.

Do everything right: To include but not limited to pro photos, professional quality design, durable furnishings.  

Even when they are charging you a very high percentage, the agent is probably operating at a loss.

Key Questions:Would it be more financially prudent to sell the rental property and pay off a chunk of my high-interest primary mortgage (7.375%), and use the remainder for a fix and flip?

I've even seen agents that will finance repairs with a lien to maximize sales price for their seller.Who you work with matters and will mean the difference between a quality BRRR that cashflows or a property that doesn't work.I love to talk real estate.

The other factor that's relevant for me is that my husband is a high end W-2 wage earner and we could greatly benefit from the potential tax benefits of actively managing the property. 

Gutters are a must, I would highly recommend installing them on your property if you dont have them already.

"Inflation expectations" is a purely rational and logical way to look at it, but let's consider that bond market buyers/sellers aren't 100% comprised of Vulcans, and that there are highly emotional and irrational individuals among them, as well. 

The other quotes I received were often unreasonably high compared to other properties in my portfolio—sometimes exceeding my current carrier’s increased rate for this property while offering less coverage.

No syndication experience but there are about a dozen quality RV/Mobile home parks on market in Oregon, several with owner carry options that can be passiv-ish with management in place.