So, if two of the comps are identical say beds, baths, view, etc...and one has to be adjusted, you might give a 40% weight to the two that are most like the subject and only 20% to the one that has adjustments.

Assuming the 3 homes are not identical, are the two rentals the same? 

BUT WAIT, THERE'S MORE....House #2 (next door also owned by seller)Identical to house #1, 4 units however, are vacant. 2 are rent ready with one being temporarily occupied by his handyman. 

I have a pit and german shepard now and both are a hand full but the pit is not the one I worry about, the shepard would eat someone if they came in uninvited....As to rentals, I have allowed dogs, fluffy or hairball, those 3/4/5 pounders that were mature dogs.

Even if you somehow had absolutely identical paychecks, tax calculations change from year to year - sometimes slightly and sometimes significantly. 

The certificates mature this month.

Around the corner literally a block away a home identical to mine, fully renovated, sold in Feb for 127000.

Kids can cause a lot more damage than a mature critter thats been neutered.

For example, you can have two identical homes on the same street (model matches) where one needs a new roof and the other does not.

Speaking of that, try to make new friends who are RE investors (as others mentioned, there are lots of ways to do this--I'd suggest checking our your local REIA).Doing these three things won't be easy--they take maturity, impulse control, and effort.