If the 2 properties were investment properties - you may have benefited from doing a 1031 exchange instead of selling 2 properties and buying 2 properties. too late now but something to think about in the future.For the property that you acquired with seller financing - please make sure to separate any payments going to the seller as principal and interest payments. principal payments decrease your liability with the seller while any interest payments are deductible on your tax return as interest expense.Stay safe as you go overseas! 

Paying off individual accounts within the loan doesn't seem to decrease the monthly payment.) 

Otherwise it's unlikely until you've built a large portfolio and can qualify as a real estate pro.Will your W2 income increase or decrease each month?

Condos alone are on the edge of being a buyer’s market.”That could mean further price decreases in a market that’s already seen three straight years of falling prices, according to the Citizen.

Basing your investment strategy on bank financing parameters will drive you crazy, limit your ability to grow and will keep you from being as productive as you could be.5) MF provides better cash flow and allows for more efficient management. 6) $/Unit decreases as your "# of units per property" increases, typically. 7) Leverage.

And vice versa, the low rate guy can bump the rate and decrease your closing costs. 

I understand new windows will decrease my insurance, but is that worth how much windows would cost?

So if you are an agent and want to flip in your area then become the best agent in your area; know every street, every house, every price increase/decrease, trend, every business that's moving in/out, etc.

The important factor in increasing income is the number of doors you own not the number of buildings.As a side not having equity in a rental property decreases cash flow due to the opportunity value of cash.

At the beginning of January they inform me that household income has decreased and they won't be able to afford that particular property anymore and would like to know if I would have anything available April 1 in their new price range.