Is this risky move a smart way to pay for BS?

Well, they’re obviously investing a ton anyway, especially since they just sold 2 of our “extra” houses to help retire early. Now that they have cleared those extra property taxes and bills out of their pay, they can invest in this. This would allow me to be able to go to BS under full pay which has a higher acceptance rate than if you were to apply for FA. I was just asking if that’s a smart investment, especially since they could potentially get 300k after the 15 years just for their retirement.