Can you make the rent payment electronically on a recurring basis on time?

Just by you saying don't sweat it too much, lessens my anxiety. 

Some recurring advice I've seen in the "Intro to REI" videos and in the forums is to be conservative when estimating expenses, and I'm finding that makes it difficult to make any property cash flow, especially if I'm living in one of the units.For example, this fourplex: https://www.zillow.com/homedet... is only 250k (which is so much lower than most other fourplexes I've seen that it seems like there might be some additional due diligence required).

My goal is to buy investment properties on a recurring basis. 

The intimidation of the price tags in Phoenix, combined with some other fear-arousing readings about the market there, easily tweak the anxiety of a rookie such as myself. 

@David Ruskey, does your wife have a recurring income?  

Are there any hidden or recurring fees that I should know about?

I can't tell you how many times I've had someone apply with four cats or three dogs and a cat, allegedly prescribed for their depression or anxiety.

In other words, is that a recurring expense, or is it one time?

This anxiety is normal for your first rental.