One of the initial reasons why these clauses were created was that during times of rising interest rates lenders could force you to refinance at the currently higher rate (more money for the banks).

IF you have a class A property you will be renting to singles, young professionals etcYou will probably have more tenant turnover, but there are a LOT of young millennials looking for urban living in places like Lower GReenville, or Uptown or Knox Henderson etc.I think your biggest considerations are property taxes, rental regulations and do the numbers work. 

If interest rates rise and bond returns go up as well there could be a push of money back into that sector.

An exception would be where there has been storm damage necessitating a roof replacement so that negates the age of house consideration.

Eventually, the rates have to go up anyway because banks can't make money at these rates.If you are in the middle of a deal now, I wouldn't expect rates to rise suddenly without a major fluctuation in the system.

A seller will give your FHA a lot more consideration if you are going to pay them a lot more money than a conventional or cash offer.

Are you recommending to not take tax credits into consideration?

Why do you say that you are not a fan of HELOCs when there is a potential for rates to rise?  

I don't make it mandatory, but I give a considerable discount on the rent if they use it.

An additional consideration is lead paint.