After they confirmed they make less than the rent, I denied the application on those grounds.After that, they messaged me that they have a housing voucher which was not included in the application as a source of income and that the housing voucher would make their income reach the minimum requirements.What do I do now?

Don't forget with a MTR you're paying all utilities including internet and yard care/snow removal, where with a LTR the tenant is paying all that. 

That being said, these will also have the strictest underwrites, including credit, DTI, and asset requirements. 

Planning, bidding, demolishing, rebuilding, etc…. and time it to be finished when the “inherited lease” is up.

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases.

I’m not a fan of including utilities as you encourage tenant waste and your property appears to be more expensive than the comps. 

Congrats on the finishing up of your education and journey into real estate investing.

The max qualifying DTI is 48.99% which includes your housing expense and all other debts on your credit report.

I'm happy to talk about the greater Phila market (including suburbs).

Most lenders...us included...treat the flip/rehab/bridge loan and the permanent financing such as a DSCR loan separate financing facilities.