Newbie with a 12 unit under contract.. Is this a deal?

Good Evening Bigger Pockets Family, 

My name is Niyi and compared to many of you i am a new investor. I purchased my first property in December of 2016 via a househack and i now have a 12 unit deal under contract!! Below is the information i have acquired thus far and a link to the bigger pockets analysis that i ran:

All Units are currently being rented to Section 8. I was told this is not a mandate, the current owner just prefers subsidized housing. This is a 3 property deal with each property housing 4 1 bedroom units.

https://www.biggerpockets.com/calculators/shared/346991/70130df3-b540-44b9-9d98-0add24e38f35

AM i missing something or is this a deal? Any and all help is welcome.