The difference in his payment was $14.58...Your main focus should be the closing costs.

You may need an experience partner, capital or equity partner(unless you have the down payment), a high level contractor prepared for the various building types. rent rolls, proforma for the buildings.

if your mortgage payment net of rent is equal to or less than what it would be renting, it's a better choice.say you could A. rent for $2000, or B. have a $3000 mortgage and collect $1200 in rent. 

Probably not an issue for seller financing, but make sure there are no prepayment penalties.You can calculate payment and balloon amount easily enough with excel or google sheets.

i would stick to upto 4 units not to cut out the house hacker buyer pool 

They qualify you based on credit, down payment + reserves, and the projected rental income.

However, it is likely that I will want to use my commissions to fund repairs, use as a down payment, or even cover expenses on these investment properties.

People just getting started often have questions about how to get money for the first down payment.

He may have contractors in the area, and or realizes that price appreciation is going to occur.3.If the property is held in a retirement account, no tax will be due on the interest payment received, either Federal or state.  

(interest rate ranges and months)What is the typical down payment?