Not only will you continue to build your portfolio, but it can offer the tax benefits to offset your high income. 

I addition to someone else paying off your leveraged property are tax benefits.

I'd suggest asking your lender to mock up what it would cost to get your rate to 5% and then do a cost-benefit analysis to determine if that's the best use of your funds. 

Will this property qualify for all the tax benefits of STR?

However, I am aware there is tremendous opportunity here, and as a smaller developer in particular, to capitalize on and benefit not only my company but the comunities we build in, as well as the city on the whole.

One of the true benefits of real estate is compounding interest.

I ask because it seems like you have two clear choices - Either finish the rehab and sell potentially at a loss, or hold the property while renting it out so you can hopefully benefit from gradual appreciation and using the rent to help make any principle paydowns on any loans you may have. 

It's hard to not make money on your rehab efforts, but remember you get to keep a property that hopefully cash flows, has loan pay down, tax benefits and appreciation.

The benefit to focusing on your best clients is that you will get reviews and referrals.

Depending on the cost, I could see a benefit in the idea.