2- How to structure the business to get the most tax benefits, taking into consideration that 50% of the company will be owned by a foreigner?

Tony will be listed as the contact on the appraisal engagement letter the lender sends out.I also recommend putting together a similar professional packet for your lender including the analysis, rehab costs, tax returns, personal financial statement, real estate portfolio and bio on your self.  

The commercial space exterior also needs a face lift, but there are grants available for this that will match funds up to $2,500.Expenses:Management: 8%CapEx: 5%Maintenance: 10%Taxes: $3400Insurance: $2900Levy/Rental Fees: $1000Sewer: $1400Water: $1080Garbage: $900

The buyer pays the insurance, taxes and pays to maintain the property.  

I also obtained certification in mitigation for foreclosures, short sales and tax sales for Global Equity Lending and American Home Lending.

Which tax number should a foreign owner of vacation rental home apply for tax purpose?

So according to my calculations for my loans which are at 6.8% ($170k worth), I would roughly need a return on an investment of 9.44% to be equal to simply paying off my student loans, based on my tax bracket (if my investment was hit with income tax of 28%).

You have to pay tax, and costs to deliver and haul away old so that could be $125 or so but replacement does look pretty good, even though the repairs are likely relatively simple.Whatever you do I would get it done soon unless you want tenants leaving early.

Only when needing the lower rate to qualify for the loan. 4.65% is very low, consider we did investing for decades with 10% money.Homes usually are held for 7 to 10 years, so your savings on interest is limited and it's tax deductible to boot. 1-your tax rate times the interest rate is your real after tax cost. 

I never flip- flipping is a full time job that delivers close to zero tax write offs and zero passive income and it's risky if you don't know a market first hand and have a trustworthy construction/rehab team in place.