Question re Exit Strategy for Buy and Hold with Private Money

[Manuel Savorelli]

Getting ready to purchase first MFR property with private money and I'd like guidance on the exit strategy.

A lot of the material posted deals with rehabs and cashout-refi of x% of ARV. My question(s) is for buy and hold.

For the sake of using round numbers, let's say the property costs $100k and I put down 20% from personal cash, and raise 80k from PML at 8% interest, for 1 year.

What are my options to refinance loan before note comes due? I'm confused because we aren't dealing with ARV so that eliminates the spread that you would pay your principal and interest.

Also,  would bank/credit union know that I received private money to fund original deal? 

Thanks in advance