Hey Christina, welcome to the "nearly 40 and not trusting social security" club. Ok, here is my two cents. Right now, its getting now difficult to flip. The better margin (profit) is on the higher range properties which require more money and experience. It can be done, but the margins are not as high as they used to be.
I personally, like single family houses. Condo values can really change depending on the building and that is out of your control. Also, condos have association fee and weird rules that could make renting the property difficult. Finally, condos typically have 'special assessments' that is additional fees for maintenance or repairs that they did not predict and your stuck with.
With that being said, I prefer single family because its much easier to predict the holding costs, maintenance costs and the overall value of the property.
My personal strategy is this. Buy and rent 3/2 concrete block houses in decent neighborhoods for 40 to 60k and rent for 700 to 900 per month. Build up cash pay off and buy more.. Easy and proven strategy..
Just my two cents.. Tenants are easy.. Message me if you want some advice there also.
Gavin