Investors, what is an acceptable repayment period & interest rate

[Mario Morales]

I am looking for assistance in buying a multi-unit, basically half the downpayment, I see it as 3 year plan, in which I give you a fixed amount, monthly from the rental income until we refi, about 3 years and give you your original investment. Original Investment + 3 years of monthly income. I would appreciate suggestions on how to partner up or how to payback an investor