If you sell your house, you only responsible for what you have spent with your line of credit.
The plans that you invest in for mortgages will make a large difference in how much you pay overall and how much you pay each month.
All of the possibilities that are opened to you are different and will provide you with various benefits.
You will either want to make sure that this will be beneficial to you in the long run or you will want to look into a different type of plan.