I thought I heard on one of the podcasts that $100/door or unit is a good goal.

I am eventually going to raise the rents on the studio to $750 and rent out the unit I currently live in for $1,000, making the total rents $3,770.Monthly PITI: $2,862For only $15k up-front, it was worth it for me since I was kicking money out the door every month in rent previously, despite the fact that the property is older, and I know it will have lots of maintenance (such as this roof issue).  

I mean house built in 1890 with 100% drywall, including ceilings, brand new HVAC (heat pump), brand new water heater, bathrooms, etc.  

The second home was a 3 br/1ba ranch short sale that I got for $64,000 and sank an additional $5,000 for a new roof, carpet and garage door.  

A man cave in the basement which will have it's own exterior entrance, a bathroom, a wet bar, AV system and access to a lower level single stall garage.  

It is nice quality trafficmaster that I have used in higher end houses.My question is it okay to use in a bathroom instead of tile?

The kitchen and master bedroom/bathroom are small.  

The apartments had about 29% vacancy, but that is largely due to a studio in the basement that has not been leased since at least 2013 (no in unit bathroom, kitchenette only). 

It's helped open doors that have allowed me, among other things to: help underwrite deals for others ($6 m condo deal .. and I was invited to fly in to help with due diligence), help build other people's due diligence system and learn about out of state investing in the process, and help newbies who are just starting out figure a few things out. 

I'm currently teaching high school math and planning on buying our first home next summer through the "neighbor next door program."