I agree with the idea of letting them stay, adding the pet deposit and socking the money away because in the end, this can be a challenge to take care of the odor.On the other hand, if the contractor is not used to cats even one dirty litter box can cause a significant ammonia odor (cats consume a very high protein diet and thus produce a high urea content urine).  

Is this a strategy I should use?

Depending on your strategy, the rentals are more for wealth-building rather than cash-flow but 

If it seems to be a strategy that I can't execute well, then I'll probably just continue saving up for the single family rental.

This strategy only works if you truly have the discounts you state.

Email me and tell me more about your strategy and criteria for a property.

What is the best strategy in using my land(debt free) as collateral for my first duplex/triplex opportunity.

Once the lease is up, I'm going to try my first BRRRR strategy.

You need to add more original content, continuously, and learn SEO strategies so you can set yourself apart from the competition.  

Great job, is it me or is Texas a great state to use the brrrr strategy?