I’m totally new at this so searching for advice.

.): ~$35K (assuming 8%)Total Cost: ~$375K–$385KProjected Profit: $65K–$75K before taxesThat is a decent margin, but this being a two-year project, you need to be sure the market doesn't shift downward, and that you have a buffer for unexpected costs.3.

The exchange entity must remain the same, meaning the ADU ownership should mirror that of the relinquished property.Construction exchanges require improvements to be completed within 180 days, and the total value must match or exceed the property being sold.

There are no pre payment  penalties on a conventional loan and when looking at the total finance charges, conventional is the way to go if you can qualify. 

Essentially it's totally dependent on the terms/risks that the buyer and seller are comfortable with and everyone understands the transaction. 

Understand the fees involved and calculate the total cost for an entire year of management so you can compare the different managers.

If you provide your credit score, purchase price,  estimated down payment, property type, occupancy type and desired term, then most lenders should be able to provide you with their current interest rate, any associated points or lender credits for the rate provided, and their total origination fees.   

We are looking to eventually relocate to the States"--that's great, a lot of people want to invest remotely in a totally random market and never go to it.  

Was your loan based on just the purchase price or the total project cost? 

My total resulting expenses for that home including rent profit and bills are roughly $1200/month.