Actually, that sounds like a great any-point-of-your-journey deal! 

For all appraisals I have seen, they used more than 1 methods of estimate for rentals. 

My business partner will be the property management for the time he is located in the area, roughly 6-12 months, from there we need to secure a property manager, grounds keeper; we need to draw up contracts and run it by lawyers in the area; and we need to specifically decide on payment methods.

I just finished reading the great book "Rental property Investing"and would really like to start my journey of real estate in the US.I have 2 single homes at Germany ( can advise if anyone is interested).I have a question regarding mortgage for foreigners, is it possible in the US (with reasonable interest)?

I'd love to ultimately be able to do the BRRRR method, but my biggest hurdle will be getting loans without being a W-2 employee. 

The journey will take approximately 10 week; I’ll be there to document every step.

https://www.biggerpockets.com/renewsblog/work-with-lenders-brrrr-method/The last time I was in Vegas, we met for breakfast and he walked me through this.

To determine what numbers and percentages to use for your projections, here are some useful methods that I've used: go look at properties for sale, network with local investors, and manage a property yourself. 

He may also be searching through his banks and investors for the best method to fund the deal.  

We are all in this journey together – and I look forward to seeing you on the forums as we all continue to help each other grow.