I am aware that with this, I will have to pay capital gains tax on the portion of the home that I rented out when I go to sell, while the portion of the home that served as my primary residence is excluded from that. 

Although the “Victoria Park” duplex had re-development potential (townhouse) because of the large yard, excluding that, since I don’t want to get into new home building, doesn’t the condo seem like a much better deal for return on investment?

I do not exclude the sellers when searching for my clients but will engage them usually only when the property is amazing and I have to deal with them.

Excluding some areas with higher property taxes and the wonderful RITA tax (long as you don't live in this state you will not know the pleasure of this), its very economically diverse. 

I don't exclude "aggressive breeds" as it depends on the dog and its owner.$200 non refundable deposit and $20/per month rent per pet.Important to note also that I specifically sought out insurance policies that did not have breed restrictions. 

And I assert that it would very hard to find a property that meets 2% rule in cities like New York, Los Angles, Chicago, Houston, Miami, etc (excluding war zones).

The house is worth just about $120k excluding the land it was built on.

Combined, I was taking in $1,450 per month in rents less mortgage payments of $245 excluding taxes, insurance, utilities, maintenance and the new gas boiler loan payment.

Closest thing I've found is an insurance company that will write me a policy but exclude the dog.