Typically 75% of rental income can be applied towards your DTI for qualification. 

When they apply is when you should confirm their identity.  

Learn what each one of these are, and see which makes the most sense to apply to your specific financial plan. $150 cash flow on any rental especially a triplex is dangerzone imo. 1 month of vacancy of 1 unit could destroy a years worth of financial gains.  

Prospective tenant views apartment and decides if they want to apply.3.

Here are a few suggestions to help with the process:Use Zillow or a Similar Platform: If you already have a Zillow listing, having them apply through there is a good option.

Might be good to apply to real estate.  

Even if one tenant is responsible for rent payments, the others will live there and impact your liability as a landlord.Accountability:Requiring all adults to apply and sign the lease holds everyone legally responsible for the terms.

The same also applies when considering a lease renewal or temination. 

Applying a value add strategies can get you to much much more equity rather quickly.

Let us know how it goes.I provide my screening criteria on my website, and I encourage applicants to screen themselves before applying so they don't waste my time, their time, or their money.