teacher benefits new homeowners program?

[Rasiel Algaze]

Hello BP  is  me  again.  I just found out that my girlfriend has some “benefits”  to buy a home being a teacher.  They can give you up to 70,000 down payment with the catch of when you sell the property they will get 50% of the equity.  Our plan is to house hack.  I need your opinion if this is a good  first investment?